US20100097890A1 - Methods and apparatuses for data collection and communication in drill string components - Google Patents
Methods and apparatuses for data collection and communication in drill string components Download PDFInfo
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- US20100097890A1 US20100097890A1 US12/254,548 US25454808A US2010097890A1 US 20100097890 A1 US20100097890 A1 US 20100097890A1 US 25454808 A US25454808 A US 25454808A US 2010097890 A1 US2010097890 A1 US 2010097890A1
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/01—Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/02—Determining slope or direction
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
Definitions
- the present invention relates generally to transmission of data within a wellbore and more particularly to methods and apparatuses for obtaining downhole data or measurements while drilling.
- a rock bit In rotary drilling, a rock bit is threaded onto a lower end of a drillstring. The drillstring is lowered and rotated, causing the bit to disintegrate geological formations. The bit cuts a borehole somewhat larger than the drillstring, so an annulus is created between the walls of the borehole and the drill string. Section after section of drill pipe, or other drillstring tool, is added to the drillstring as new depths are reached.
- mud a fluid, often called “mud,” is pumped downward through the drill pipe, through the drill bit, and up to the surface through the annulus, carrying cuttings from the borehole bottom to the surface.
- Directional drilling is the process of using the drill bit to drill a borehole in a specific direction to achieve some drilling objective. Measurements concerning the drift angle, the azimuth, and tool face orientation all aid in directional drilling. A measurement while drilling system may replace single shot surveys and wire line steering tools, saving time and cutting drilling costs.
- Measurement while drilling systems may also yield valuable information about the condition of the drill bit, helping determine when to replace a worn bit, thus avoiding the pulling of bits that are not near their end of life or drilling until a bit fails.
- Drilling fluid telemetry in the form of continuous wave and mud pulse telemetry presents a number of challenges.
- mud telemetry has a slow data transmission rate, high signal attenuation, difficulty in detecting signals over mud pump noise, maintenance requirements, and the inconvenience of interfacing and matching the data telemetry system with the choice of mud pump, and drill bit.
- drill string components such as drill bits and sensor subassemblies
- drillstring components so configured could provide significant amounts of useful data.
- conventional subs are expensive and are configured as dedicated downhole components that must be placed in the drillstring instead of, or in addition to, a simple drill pipe or drill collar.
- Embodiments of the present invention include methods and apparatuses for disposing data processing modules in drillstring elements and providing communication between these data processing modules disposed along a drillstring and a remote computer.
- embodiments of the present invention include methods and apparatuses for analyzing dynamic movements of the drillstring.
- One embodiment of the invention includes a component configured for attachment as part of a drillstring.
- the component includes a tubular member with a central bore formed therethrough. At a first end of the tubular member is a box-end. At a second end of the tubular member is a pin-end adapted for coupling to a box-end of another downhole tool.
- the box-end includes a first signal transceiver and the pin-end and includes a second signal transceiver operably coupled to the first signal transceiver and also configured for communication with the first signal transceiver in another component of the drillstring.
- An end-cap is configured for disposition in the central bore of the pin-end to form an annular chamber between a side of the end-cap and a wall of the central bore of the pin-end when the end-cap is disposed in the central bore of the pin-end.
- an electronics module is configured for disposition in the annular chamber and configured to communicate with the second signal transceiver.
- a drillstring communication network comprising a plurality of components including downhole tools, subs, joints, drill collars, and other components coupled together.
- Each component includes a box-end at a first end of the component bearing a first signal transceiver and a pin-end at a second end of the component bearing a second signal transceiver.
- Some, or all, of the components include an end-cap disposed in a central bore of the pin-end forming an annular chamber between a side of the end-cap and a wall of the central bore of the pin-end.
- some, or all, of the components include an electronics module disposed in the annular chamber.
- the electronics module includes at least one sensor and a communication element operably coupled between the at least one sensor and the second signal transceiver.
- a remote computer is configured for communicating with the components that include an electronics module.
- the first signal transceiver of each component and the second signal transceiver of each component are configured for communication therebetween such that the components form a communication link between the communication elements of the components including electronics modules and the remote computer.
- the network includes a plurality of data processing modules disposed in a plurality of components coupled to form a drillstring.
- the plurality of data processing modules are operably coupled for communication therebetween and communication with a remote computer.
- Each data processing module includes a plurality of accelerometers configured for sensing acceleration in a plurality of directions at the data processing module and a communication element operably coupled to the plurality of accelerometers.
- the communication element is also coupled to at least one other data processing module.
- Each data processing module is configured to collect accelerometer information at substantially the same time as other data processing modules and transmit the accelerometer information to the at least one communication element in another data processing module, the remote computer, or a combination thereof.
- Yet another embodiment of the invention includes a method of communicating information in a drillstring.
- the method includes communicatively coupling a plurality of components bearing a first transceiver at a box-end and a second transceiver at a pin-end by mechanically coupling the plurality of components to form a drillstring communication network.
- the method also includes disposing at least one electronics module in an annular chamber of the pin-end of at least one component of the plurality to operably couple the at least one electronics module to the drillstring communication network.
- At least one physical parameter is sensed near the at least one electronics module and communicated to another electronics module in another component, a remote computer, or a combination thereof.
- Yet another embodiment of the invention includes a method of determining dynamics characteristics of a drillstring.
- the method includes acquiring accelerometer information at a plurality of locations along a drillstring by sampling a plurality of accelerometers disposed in a pin-end of a plurality of drillstring tools operably coupled together to form the drillstring.
- the method also includes communicating the accelerometer information along the drillstring using communication capabilities of each drillstring tool in the drillstring and processing the accelerometer information from the plurality of locations to determine drillstring dynamics information about the drillstring.
- FIG. 1 illustrates a conventional drilling rig for performing drilling operations
- FIG. 2 illustrates a drill pipe as an example of a component including one or more embodiments of the present invention
- FIG. 3 is a perspective view showing a pin-end of one component, a box-end of another component, and an end-cap for disposition in the pin-end;
- FIG. 4 is a perspective view of a pin-end, receiving an embodiment of an electronics module and an end-cap;
- FIG. 5 is a cross sectional view of the pin-end with the end-cap disposed therein;
- FIG. 6 is another cross sectional view of the pin-end with the end-cap disposed therein and illustrating an annular chamber formed by the end-cap and borehole through the pin-end;
- FIG. 7 is a drawing of an embodiment of an electronics module configured as a flex-circuit board enabling formation into an annular ring suitable for disposition in the annular chamber of FIGS. 5 and 6 ;
- FIG. 8 is a block diagram of an embodiment of a data processing module according to one or more embodiments of the present invention.
- FIG. 9 illustrates placement of multiple accelerometers in a component relative to a borehole
- FIG. 10 illustrates examples of data sampled from accelerometer sensors and magnetometer sensors along three axes of a Cartesian coordinate system that is static with respect to the drill bit, but rotating with respect to a stationary observer;
- FIG. 11 is a block diagram of a drillstring communication network according to one or more embodiments of the present invention.
- FIG. 12 is a simplified view of a drillstring including embodiments of the present invention and illustrating potential dynamic movement of the drillstring;
- FIG. 13 illustrates a timeline indicating a synchronizing signal at various locations along the drillstring.
- FIG. 1 depicts an example of a conventional apparatus for performing subterranean drilling operations.
- Drilling rig 110 includes a derrick 112 , a derrick floor 114 , a draw works 116 , a hook 118 , a swivel 120 , a Kelly joint 122 , and a rotary table 124 .
- a drillstring 140 which includes a drill pipe section 142 and a drill collar section 144 , extends downward from the drilling rig 110 into a borehole 100 .
- the drill pipe section 142 may include a number of tubular drill pipe members or strands connected together and the drill collar section 144 may likewise include a plurality of drill collars.
- the drillstring 140 may include a measurement-while-drilling (MWD) logging subassembly and cooperating mud pulse telemetry data transmission subassembly, which are collectively referred to as an MWD communication system 146 , as well as other communication systems known to those of ordinary skill in the art.
- MWD measurement-while-drilling
- drilling fluid is circulated from a mud pit 160 through a mud pump 162 , through a desurger 164 , and through a mud supply line 166 into the swivel 120 .
- the drilling mud (also referred to as drilling fluid) flows through the Kelly joint 122 and into an axial central bore in the drillstring 140 . Eventually, it exits through apertures or nozzles, which are located in a drill bit 200 , which is connected to the lowermost portion of the drillstring 140 below drill collar section 144 .
- the drilling mud flows back up through an annular space between the outer surface of the drillstring 140 and the inner surface of the borehole 100 , to be circulated to the surface where it is returned to the mud pit 160 through a mud return line 168 .
- a shaker screen (not shown) may be used to separate formation cuttings from the drilling mud before it returns to the mud pit 160 .
- the MWD communication system 146 may utilize a mud pulse telemetry technique to communicate data from a downhole location to the surface while drilling operations take place.
- a mud pulse transducer 170 is provided in communication with the mud supply line 166 . This mud pulse transducer 170 generates electrical signals in response to pressure variations of the drilling mud in the mud supply line 166 .
- a surface conductor 172 is conventionally a data processing system with a central processing unit for executing program instructions, and for responding to user commands entered through either a keyboard or a graphical pointing device.
- the mud pulse telemetry system is provided for communicating data to the surface concerning numerous downhole conditions sensed by well logging and measurement systems that are conventionally located within the MWD communication system 146 . Mud pulses that define the data propagated to the surface are produced by equipment conventionally located within the MWD communication system 146 . Such equipment typically comprises a pressure pulse generator operating under control of electronics contained in an instrument housing to allow drilling mud to vent through an orifice extending through the drill collar wall.
- the circulating drilling mud also may provide a source of energy for a turbine-driven generator subassembly (not shown) which may be located near a bottom hole assembly (BHA).
- the turbine-driven generator may generate electrical power for the pressure pulse generator and for various circuits including those circuits that form the operational components of the measurement-while-drilling tools.
- batteries may be provided, particularly as a back up for the turbine-driven generator.
- Embodiments of the present invention include methods and apparatuses for disposing data processing modules in drillstring elements and providing communication between these data processing modules disposed along a drillstring and a remote computer.
- embodiments of the present invention include methods and apparatuses for analyzing dynamic movements of the drillstring.
- downhole is intended to have a relatively broad meaning. Downhole includes environments within a wellbore and below the surface, such as, environments encountered when drilling for oil and/or gas, and extraction of other subterranean minerals, as well as when drilling for water and other subsurface liquids, and for geothermal exploration.
- component refers to any pipe, collar, joint, sub or other component having a central bore and used in exploration and/or excavation of a subterranean well.
- Non-limiting examples of such components include casings, drill pipe, drill collars, drill bit subs, transmission links, reamers, stabilizers, motors, turbines, mud hammers, jars, Kellys, blow-out preventers, and steering subs.
- FIG. 2 is a perspective view of a drill pipe 190 as an example of a component 190 including one or more embodiments of the present invention.
- the component 190 may include a substantially cylindrical tubular member 220 between a box-end 230 (also referred to herein as a first end 230 ) and a pin-end 210 (also referred to herein as a second end 210 ).
- such components 190 have a central passageway 280 (i.e., a central bore 280 ) to permit the flow of drilling fluid from the surface to the drill bit.
- the component 190 is illustrated as a section of drill pipe, its purpose is to generally represent the relevant characteristics of all components 190 .
- heavy weight drill pipe and drill collars may differ from the drill pipe of FIG. 2 in the thickness of the outer wall.
- a reamer used to enlarge the gage of the borehole above a bit of smaller diameter
- a stabilizer used to ride against the bore wall to give stability to the drill string
- some components 190 like jars, motors, hammers, steering subs, sensor subs, and blow-out preventers, may include additional internal elements in the basic component structure of FIG. 2 to achieve unique functions related to borehole exploration and/or excavation.
- the pin-end 210 includes external tapered threads.
- the box-end 230 includes internal tapered threads.
- the tubular member 220 extends between the box-end 230 and the pin-end 210 and may extend between about thirty and ninety feet in length.
- the pin-end 210 and the box-end 230 are complementary, such that a pin-end 210 of a first component may be joined to box-end 230 a second component. In this manner, components 190 may be joined together to form a drill string 140 as long as 20,000 feet or more.
- FIG. 3 is a perspective views showing a box-end 230 of a first downhole tool, a pin-end 210 of a second downhole tool, and an end-cap 270 for disposition in the pin-end 210 .
- an electronics module (not illustrated in FIG. 3 ) may be disposed around the end-cap 270 such that the end-cap 270 and electronics module can be secured within the borehole of the pin-end 210 .
- two components 190 A and 190 B
- the pin-end 210 on the second component is threaded into the box-end 230 on the first component such that surfaces 232 and 234 engage to form a tight connection between the first component and the second component.
- a first signal transceiver 250 is illustrated as embedded in a ring around an interior surface 236 of the box-end 230 of the first component 190 A.
- a second signal transceiver 255 is embedded in a ring around the outer surface 238 of the pin-end 210 of the second component 190 B.
- first signal transceiver 250 and the second signal transceiver 255 may be implemented in a variety of ways.
- the first signal transceiver 250 and the second signal transceiver 255 include wire coils embedded in annular channels in the interior surface 236 and outer surface 238 , respectively.
- the first signal transceiver 250 and the second signal transceiver 255 form an intra-tool coupling signal via inductive coupling therebetween.
- signals may be transmitted between the first signal transceiver 250 and the second signal transceiver 255 by way of Hall Effect coupling as depicted, described, and claimed in U.S. Pat. No. 4,884,071 entitled “Wellbore Tool With Hall Effect Coupling,” which issued on Nov. 28, 1989 to Howard, the disclosure of which is incorporated herein by reference.
- An electrical pathway ( 240 A and 240 B) is illustrated as a small borehole in the sidewall of the components ( 190 A and 190 B) extends between the box-end 230 and the pin-end 210 .
- the electrical pathway may be configured as a conduit running along the inside surface of the central bore 280 between the box-end 230 and the pin-end 210 .
- the first signal transceiver 250 and the second signal transceiver 255 within the same component may be coupled for communication as an inter-tool coupling signal inside the electrical pathway 240 in a number of ways.
- a coaxial cable, twisted pair wires, individual wires, or combinations thereof may be used to couple the first signal transceiver 250 and the second signal transceiver 255 for communication.
- the wires or cables may be used for transmitting power to electronics modules along the drillstring. Alternatively, some or all of the electronics modules may include their own independent power source.
- the drillstring tools are all coupled together to form a drillstring communication network.
- Each drillstring tool need not include an end-cap 270 or an electronics module (not shown) disposed around the end-cap 270 .
- each drillstring tool between the surface and the farthest component with a communication element will include a first signal transceiver 250 coupled to a second signal transceiver 255 such that the drillstring forms the continuous network.
- the communication network may extend partially down the drillstring or may extend all the way to, and including, the drill bit.
- connection pathway 245 extends from the electrical pathway 240 to the central bore 280 .
- This connection pathway 245 enables coupling of the electronics module (not shown in FIG. 3 ) disposed around the end-cap 270 to connect with the wires or cables in the electrical pathway 240 , thus forming a connection to the drillstring communication network.
- the connection pathway 245 may include electrical connections 247 (or other suitable communication link) around the central bore 280 .
- the electronics module may include contact points (not shown) that connect with the electrical connections 247 when the electronics module is disposed in the central bore 280 .
- the number of communication link signals may vary for different embodiments of the invention.
- FIG. 4 is a perspective view of a pin-end 210 , receiving an embodiment of an electronics module and an end-cap 270 according to one or more embodiments of the present invention.
- FIG. 5 is a cross sectional view of the pin-end 210 with the end-cap 270 disposed therein.
- FIG. 6 is a cross sectional view of another embodiment of a pin-end 210 with an end-cap 270 disposed therein, and an annular chamber 260 formed between the pin-end 210 and the end-cap 270 .
- the threads on the pin-end 210 are not illustrated in FIGS. 4 , 5 , and 6 .
- FIG. 6 In the FIG. 6 embodiment, much of the annular chamber 260 is formed within the sidewall of the pin-end 210 . In contrast, in the embodiment of FIGS. 4 and 5 much of the annular chamber 260 is formed by around the pin-end 210 .
- FIGS. 4 and 5 illustrate the pin-end 210 of a component, an end-cap 270 , and an embodiment of an electronics module 290 (not shown in FIG. 5 ).
- the pin-end 210 includes a central bore 280 formed through the longitudinal axis of the pin-end 210 . In conventional components 190 , this central bore 280 is configured for allowing drilling mud to flow therethrough.
- the central bore 280 is given a diameter sufficient for accepting the electronics module 290 configured in a substantially annular ring, yet without substantially affecting the structural integrity of the pin-end 210 .
- the electronics module 290 may be placed down in the central bore 280 , about the end-cap 270 , which extends through the inside diameter of the annular ring of the electronics module 290 to create a fluid tight annular chamber 260 ( FIG. 5 ) with the wall of the central bore 280 and seal the electronics module 290 in place within the pin-end 210 .
- the end-cap 270 includes a cap bore 276 formed therethrough, such that the drilling mud may flow through the end cap, through the central bore 280 of the pin-end 210 to the other side of the pin-end 210 , and then into the body of component 190 .
- the end-cap 270 includes a first flange 271 including a first sealing ring 272 , near the lower end of the end-cap 270 , and a second flange 273 including a second sealing ring 274 , near the upper end of the end-cap 270 .
- FIG. 5 is a cross-sectional view of the end-cap 270 disposed in the pin-end 210 without the electronics module 290 ( FIG. 7 ), illustrating the annular chamber 260 formed between the first flange 271 , the second flange 273 , the end-cap body 275 , and the walls of the central bore 280 .
- the first sealing ring 272 and the second sealing ring 274 form a protective, fluid tight, seal between the end-cap 270 and the wall of the central bore 280 to protect the electronics module 290 ( FIG. 7 ) from adverse environmental conditions.
- the protective seal formed by the first sealing ring 272 and the second sealing ring 274 may also be configured to maintain the annular chamber 260 at approximately atmospheric pressure.
- the first sealing ring 272 and the second sealing ring 274 are formed of material suitable for high-pressure, high temperature environment, such as, for example, a Hydrogenated Nitrile Butadiene Rubber (HNBR) O-ring in combination with a PEEK back-up ring.
- HNBR Hydrogenated Nitrile Butadiene Rubber
- the end-cap 270 may be secured to the pin-end 210 with a number of connection mechanisms such as, for example, a secure press-fit using sealing rings 272 and 274 , a threaded connection, an epoxy connection, a shape-memory retainer, welded, and brazed. It will be recognized by those of ordinary skill in the art that the end-cap 270 may be held in place quite firmly by a relatively simple connection mechanism due to differential pressure and downward mudflow during drilling operations.
- FIG. 7 is a drawing of an embodiment of the electronics module 290 configured as a flex-circuit board enabling formation into an annular ring suitable for disposition in the annular chamber 260 of FIGS. 4 , 5 , and 6 .
- This flex-circuit board embodiment of the electronics module 290 is shown in a flat uncurled configuration in FIG. 7 .
- the flex-circuit board 292 includes a high-strength reinforced backbone (not shown) to provide acceptable transmissibility of acceleration effects to sensors such as accelerometers.
- flex-circuit board 292 bearing non-sensor electronic components may be attached to the end-cap 270 in a manner suitable for at least partially attenuating the acceleration effects experienced by the component 190 during drilling operations using a material such as a visco-elastic adhesive.
- electronics module 290 generally refers to a physical configuration of a circuit board including electrical components, electronic components, or combinations thereof configured for practicing embodiments of the present invention.
- data processing module generally refers to a functional configuration of elements on the electronics module 290 configured to perform functions according to embodiments of the present invention.
- a data processing module may be configured for sampling data in different sampling modes, sampling data at different sampling frequencies, and analyzing data.
- the data processing module may also be configured to communicate the sampled data, the analyzed data, software, firmware, control data, and combinations thereof to other data processing modules in other components 190 , the drill bit, or a surface computer (not shown).
- the data processing module 300 includes a power supply 310 , one or more processors 320 , a memory 330 , and a clock 360 .
- the data processing module 300 may also include one or more sensors 340 configured for measuring a plurality of physical parameter related to a component state, which may include component condition, drilling operation conditions, and environmental conditions proximate the component.
- the sensors 340 may include a plurality of accelerometers 340 A, a plurality of magnetometers 340 M, and at least one temperature sensor 340 T.
- the plurality of accelerometers 340 A may include three accelerometers 340 A configured in a Cartesian coordinate arrangement.
- the plurality of magnetometers 340 M may include three magnetometers 340 M configured in a Cartesian coordinate arrangement. While any coordinate system may be defined within the scope of the present invention, one example of a Cartesian coordinate system, shown in FIG. 4 , defines a z-axis along the longitudinal axis about which the drill bit 200 rotates, an x-axis perpendicular to the z-axis, and a y-axis perpendicular to both the z-axis and the x-axis, to form the three orthogonal axes of a typical Cartesian coordinate system.
- the coordinate system may be considered a rotating Cartesian coordinate system with a varying orientation relative to the fixed surface location of the drilling rig 110 ( FIG. 1 ).
- the accelerometers 340 A of the FIG. 8 embodiment when enabled and sampled, provide a measure of acceleration of the component 190 along at least one of the three orthogonal axes.
- the data processing module 300 may include additional accelerometers 340 A to provide a redundant system, wherein various accelerometers 340 A may be selected, or deselected, in response to fault diagnostics performed by the processor 320 .
- additional accelerometers 340 A may be used to determine additional information about bit dynamics and assist in distinguishing lateral accelerations from angular accelerations.
- FIG. 9 is a top view of a component within a borehole. As can be seen, FIG. 9 illustrates the component 190 offset within the borehole 100 , which may occur due to drillstring behavior other than simple rotation around a rotational axis. FIG. 9 also illustrates placement of multiple accelerometers with a first set of accelerometers 340 A positioned at a first location and a second set of accelerometers 340 A′ positioned at a second location within the bit body.
- the first set 340 A includes a first coordinate system 341 with x, y, and z accelerometers
- the second set 340 A′ includes a second coordinate system with x and y accelerometers 341 ′.
- an x accelerometer may be configured to detect and measure a tangential acceleration of drill bit 200
- a y accelerometer may be configured to detect and measure a radial acceleration of drill bit 200
- a z accelerometer may be configured to detect and measure an axial acceleration of drill bit 200 .
- first set 340 A and second set 340 A′ may comprise accelerometers rated for 30 g acceleration.
- first set of accelerometers 340 A and second set of accelerometers 340 A′ may each include an additional x accelerometer 351 located with the first set of accelerometers 340 A and an additional x accelerometer 351 ′ located with the second set of accelerometers 340 A′.
- additional x accelerometers may be configured to detect and measure lower accelerations in a radial direction relative to the x accelerometers in the first set of accelerometers 340 A and the second set of accelerometers 340 A′.
- the additional x accelerometer ( 351 and 351 ′) may comprise accelerometers rated for 5 g accelerations and x accelerometers in the first set 340 A and the second 340 A′ may comprise accelerometers rated for 30 g accelerations.
- the second x accelerometers may provide enhanced granularity and, thus, enhanced precision in revolutions per minute (RPM) calculations.
- RPM revolutions per minute
- the first set 340 A and the second 340 A′ of accelerometers provide a large range of accelerations (i.e., up to 30 g).
- x accelerometers 351 and 351 ′ provide more precision, of the acceleration at these lower accelerations. As a result, more precise calculations may be performed when deriving dynamic behavior at low accelerations.
- embodiments may include three coordinates in the second set of accelerometers as well as other configurations and orientations of accelerometers alone or in multiple coordinate sets.
- differences between the accelerometer sets may be used to distinguish lateral accelerations from angular accelerations. For example, if the two sets of accelerometers are both placed at the same radius from the rotational center of the component and the component is only rotating about that rotational center, then the two accelerometer sets will experience the same angular rotation. However, the bit may be experiencing more complex behavior, such as, for example, bit whirl, bit wobble, bit walking, and lateral vibration. These behaviors include some type of lateral motion in combination with the angular motion.
- the component may be rotating about its rotational axis and at the same time, walking around the larger circumference of the borehole 100 .
- the two sets of accelerometers disposed at different places will experience different accelerations.
- the lateral accelerations and angular accelerations may be more easily determined with the additional accelerometers.
- component velocity profiles and component trajectories may be inferred by mathematical integration of the accelerometer data using conventional numerical analysis techniques.
- acceleration data may be analyzed and used to determine adaptive thresholds to trigger specific events within the data processing module 300 .
- these additional data sets may be useful for determining additional adaptive thresholds through direct application of the data set or through additional processing, such as, for example, pattern recognition analysis.
- an adaptive threshold may be set based on how far off center a component may traverse before triggering an event of interest within the data processing module 300 . For example, if the component trajectory indicates that the component is offset from the center of the borehole by more than one inch, a different algorithm of data collection from the sensors 340 may be invoked.
- the magnetometers 340 M of the FIG. 8 embodiment when enabled and sampled, provide a measure of the orientation of the component 200 along at least one of the three orthogonal axes relative to the earth's magnetic field.
- the data processing module 300 may include additional magnetometers 340 M to provide a redundant system, wherein various magnetometers 340 M may be selected, or deselected, in response to fault diagnostics performed by the processor 320 .
- the data processing module 300 may be configured to provide for recalibration of magnetometers 340 M during operation. Recalibration of magnetometers 340 M may be necessary to remove magnetic field affects caused by the environment in which the magnetometers 340 M reside. For example, measurements taken in a downhole environment may include errors due to a high magnetic field within the downhole formation. Therefore, it may be advantageous to recalibrate the magnetometers 340 M prior to taking new measurements in order to take into account the high magnetic field within the formation.
- the temperature sensor 340 T may be used to gather data relating to the temperature of the component, and the temperature near the accelerometers 340 A, magnetometers 340 M, and other sensors 340 . Temperature data may be useful for calibrating the accelerometers 340 A and magnetometers 340 M to be more accurate at a variety of temperatures.
- sensors 340 may be included as part of the data processing module 300 .
- sensors 340 that may be useful in the present invention are strain sensors at various locations of the component, temperature sensors at various locations of the component, mud (drilling fluid) pressure sensors to measure mud pressure internal to the component, and borehole pressure sensors to measure hydrostatic pressure external to the component.
- Sensors 340 may also be implemented to detect mud properties, such as, for example, sensors 340 to detect conductivity or impedance to both alternating current and direct current, sensors 340 to detect changes in mud properties, and sensors 340 to characterize mud properties such as synthetic based mud and water based mud.
- These optional sensors 340 may include sensors 340 that are integrated with and configured as part of the data processing module 300 or as optional remote sensors 340 placed in other areas of the component 200 .
- the memory 330 may be used for storing sensor data, signal processing results, long-term data storage, and computer instructions for execution by the processor 320 . Portions of the memory 330 may be located external to the processor 320 and portions may be located within the processor 320 .
- the memory 330 may be Dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), Read Only Memory (ROM), Nonvolatile Random Access Memory (NVRAM), such as Flash memory, Electrically Erasable Programmable ROM (EEPROM), or combinations thereof.
- the memory 330 is a combination of SRAM in the processor 320 (not shown), Flash memory 330 in the processor 320 , and external Flash memory 330 . Flash memory may be desirable for low power operation and ability to retain information when no power is applied to the memory 330 .
- the data processing module 300 also includes a communicator 350 (also referred to herein as a communication element 350 ) for coupling to the second signal transceiver 255 via communication link 247 .
- a communicator 350 also referred to herein as a communication element 350 for coupling to the second signal transceiver 255 via communication link 247 .
- the second signal transceiver 255 is coupled to the first signal transceiver 250 by an inter-tool coupling signal 252 .
- communication between the first signal transceiver 250 in one component and a second signal transceiver 255 in another component occurs via intra-tool coupling signals 254 .
- the communicator 350 may use any suitable communications protocol and communication physical layer, which may depend on the type of inter-tool coupling signal 252 and intra-tool coupling signal 254 used in the component.
- a wireless communication protocol may include Bluetooth, and 802.11a/b/g protocols.
- the data processing module 300 may be configured to communicate with a remote processing system (not shown) such as, for example, a computer, a portable computer, or a personal digital assistant (PDA) when the component is not downhole.
- a remote processing system such as, for example, a computer, a portable computer, or a personal digital assistant (PDA) when the component is not downhole.
- the communication link 247 may be used for a variety of functions, such as, for example, to download software and software upgrades, to enable setup of the data processing module 300 by downloading configuration data, and to upload sample data and analysis data.
- the communicator 350 may also be used to query the data processing module 300 for information related to the component, such as, for example, data processing module serial number, software version, and other long term data that may be stored in the NVRAM.
- the processor 320 in the embodiment of FIG. 8 may be configured for processing, analyzing, and storing collected sensor data.
- the processor 320 of this embodiment may include a digital-to-analog converter (DAC).
- DAC digital-to-analog converter
- the present invention may be practiced with one or more external DACs in communication between the sensors 340 and the processor 320 .
- the processor 320 may include internal SRAM and NVRAM.
- the present invention may be practiced with memory 330 that is only external to the processor 320 as well as in a configuration using no external memory 330 and only memory 330 internal to the processor 320 .
- the embodiment of FIG. 8 may use battery power as the operational power supply 310 .
- Battery power enables operation without consideration of connection to another power source while in a drilling environment.
- power conservation may become a significant consideration in the present invention.
- a low power processor 320 and low power memory 330 may enable longer battery life.
- other power conservation techniques may be significant in the present invention.
- power may be supplied to the data processing module 300 through the communication link 247 .
- Software running on the processor 320 may be used to manage battery life intelligence and adaptive usage of power consuming resources to conserve power.
- the battery life intelligence can track the remaining battery life (i.e., charge remaining on the battery) and use this tracking to manage other processes within the system.
- the battery life estimate may be determined by sampling a voltage from the battery, sampling a current from the battery, tracking a history of sampled voltage, tracking a history of sampled current, and combinations thereof.
- the battery life estimate may be used in a number of ways. For example, near the end of battery life, the software may reduce sampling frequency of sensors 340 , or may be used to cause the power control bus to begin shutting down voltage signals to various components.
- This power management can create a graceful, gradual shutdown. For example, perhaps power to the magnetometers is shut down at a certain point of remaining battery life. At another point of battery life, perhaps the accelerometers are shut down. Near the end of battery life, the battery life intelligence can ensure data integrity by making sure improper data is not gathered or stored due to inadequate voltage at the sensors 340 , the processor 320 , or the memory 330 .
- Software modules also may be devoted to memory management with respect to data storage.
- the amount of data stored may be modified with adaptive sampling and data compression techniques. For example, data may be originally stored in an uncompressed form. Later, when memory space becomes limited, the data may be compressed to free up additional memory space.
- data may be assigned priorities such that when memory space becomes limited high priority data is preserved and low priority data may be overwritten.
- the data processing module 300 may include no more than a repeater 355 .
- the repeater 355 may get power from the power supply 310 or from the communication link 247 .
- the communication signal travels within the component via the inter-tool coupling signal 252 and between components 190 via the intra-tool coupling signal 254 , signal attenuation and distortion is likely to occur.
- Some signal transceivers may have less attenuation than others, but loss and distortion may be a problem, particularly for very long drillstrings.
- a repeater 355 can be placed at intervals along the communication signal to amplify and re-condition the signal to be clean and strong for further transmission up the drillstring, down the drillstring, or combination thereof.
- the data processing module 300 may not include the processor 320 and memory 330 . Instead, the communicator 350 may couple directly to the sensors 340 and sample the sensor signals prior to transmission on the communication signal.
- FIG. 10 illustrates examples of data sampled from accelerometer sensors and magnetometer sensors along three axes of a Cartesian coordinate system that is static with respect to the drill bit, but rotating with respect to a stationary observer.
- magnetometer samples histories are shown for X magnetometer samples 610 X and Y magnetometer samples 610 Y.
- software can detect when a complete revolution has occurred. For example, the software can detect when the X magnetometer samples 610 X have become positive (i.e., greater than a selected value) as a starting point of a revolution. The software can then detect when the Y magnetometer samples 610 Y have become positive (i.e., greater than a selected value) as an indication that revolutions are occurring. Then, the software can detect the next time the X magnetometer samples 610 X become positive, indicating a complete revolution.
- FIG. 10 illustrates torsional oscillation as an example of component dynamic behavior that may be of interest.
- the magnetometer measurements 610 Y and 610 X illustrate a rotational speed of about 20 revolutions per minute (RPM) 611 X, which may be indicative of the drill bit binding on some type of subterranean formation.
- the magnetometers then illustrate a large increase in rotational speed, to about 120 RPM 611 Y, when the drill bit is freed from the binding force. This increase in rotation is also illustrated by the accelerometer measurements 620 X, 620 Y, and 620 Z.
- time varying data such as that illustrated in FIG. 10 may be analyzed for detection of specific events.
- These events may be used within the data processing module 300 to modify the behavior of the data processing module 300 .
- the events may cause changes such as, modifying power delivery to various elements within the data processing module 300 , modifying communications modes, and modifying data collection scenarios.
- Data collection scenarios may be modified, for example by modifying which sensors 340 to activate or deactivate, the sampling frequency for those sensors 340 , compression algorithms for collected data, modifications to the amount of data that is stored in memory 330 on the data processing module 300 , changes to data deletion protocols, modification to additional triggering event analysis, and other suitable changes.
- Trigger event analysis may be as straightforward as a threshold analysis. However, other more detailed analysis may be performed to develop triggers based on component behavior such as component dynamics analysis, formation analysis, and the like.
- FIG. 11 is a block diagram of a drillstring communication network 400 according to one or more embodiments of the present invention.
- the communication network includes a remote computer 500 , a first downhole module D 1 , a second downhole module D 2 , a bit, a last downhole module DN, and a penultimate downhole module D(N ⁇ 1).
- Each downhole module represents an embodiment of an electronics module 290 that may be placed in a pin-end 210 of a component.
- each component need not include a downhole module.
- many components 190 may simply include the first signal transceiver 250 and the second signal transceiver 255 for making the drillstring communication network 400 continuous.
- each component that participates in the downhole communications network includes a first signal transceiver 250 coupled to a second signal transceiver 255 via an inter-tool coupling signal 252 .
- an intra-tool coupling signal 254 is an intra-tool coupling signal 254 .
- the components 190 may include an electronics module 290 coupled to the second signal transceiver 255 .
- the electronics module 290 may include only a repeater 355 .
- the electronics module 290 may include a variety of components such as processors 320 , sensors 340 , a repeater 355 , and combinations thereof.
- the downhole modules may be disposed at regular intervals along the drillstring communication network 400 or may be concentrated at certain areas of the drillstring that are of particular interest.
- the drillstring communication network 400 need not traverse the entire drillstring.
- the drillstring communication network 400 may extend from the remote computer 500 on the surface only down to a stabilizer or motor sub.
- the drillstring communication network 400 may extend from the drill bit up to an electronics module 290 only part way up the drillstring. In this type of network, some of the electronics modules 290 may include large amounts of memory 330 for storing historical information from the drill bit or other electronics modules 290 in the network.
- FIG. 12 is a simplified view of a drillstring including embodiments of the present invention and illustrating potential dynamic movement of the drillstring.
- the drillstring includes components D 1 , D 2 , D 3 , D 4 , D(N ⁇ 3), D(N ⁇ 2), D(N ⁇ 1), DN, and a drill bit.
- the drillstring may experience undesired motion in a lateral direction (DL), an axial direction (DA) and a torsional direction (DT).
- DL lateral direction
- DA axial direction
- DT torsional direction
- Mechanical systems that experience displacement due to forces, particularly periodic forces, such as drillstring rotation, may experience vibrations in any of these directions as well as combinations of these directions.
- these vibrations can occur at a natural harmonic of the mechanical system (i.e., the drillstring) and cause large, undesired forces and displacements on elements of the drillstring.
- data processing modules 300 distributed along the drillstring can sample accelerations, and determine velocities and displacements at each of the locations where a data processing module 300 is disposed.
- harmonic vibrations can be detected.
- an operator may modify the drilling characteristics by, for example, modifying the weight-on-bit or the rotational speed.
- motion characteristics may be inferred at locations along the drillstring different from where the electronics modules 290 are located.
- interpolation of the motion characteristics at two different electronics modules 290 may be used to determine motion characteristics at points along the drillstring between the two electronics modules 290 .
- extrapolation of the motion characteristics at two different electronics modules 290 may be used to determine motion characteristics at points along the drillstring that are outside the two electronics modules 290 .
- the acceleration measurements, velocity determinations, and displacement determinations at each of the data processing module 300 locations must be synchronized with respect to each other so that the data at each location can be correlated to the same time.
- Time synchronization of the distributed data-acquisition/sensor packages may be accomplished in a pair-wise fashion using an algorithm used for networks, e.g., TPSN (time synchronization for sensor networks) or TDMA (time division multiple access).
- TPSN time synchronization for sensor networks
- TDMA time division multiple access
- the objective is to discover a propagation time and a clock drift between two sensors.
- Propagation time and clock drift may be represented as:
- deltaT 1 - 2 is the total transit time (propagation time+clock drift) from unit 1 to unit 2 and deltaT 2 - 1 is the total transit time from unit 2 to unit 1 .
- this pair-wise check may be performed periodically during the run to maintain synchronization, which may vary due to clock drift.
- FIG. 13 illustrates a method of determining a synchronization time that is substantially the same at any point along the drillstring.
- a timeline indicating a synchronizing signal at various locations along the drillstring is shown in FIG. 13 .
- a time line is illustrated for the surface S with the remote computer 500 , a data processing module D 1 at a first location on the drillstring, a data processing module D 2 at a second location on the drillstring, a data processing module D(N ⁇ 1) at a penultimate location on the drillstring, and a data processing module DN at a last location on the drillstring.
- the remote computer 500 sends a forward synchronization signal tSA down the communication signal.
- the forward synchronization signal tD 1 A arrives at data processing module D 1 .
- the forward synchronization signal tD 2 A arrives at data processing module D 2 .
- the forward synchronization signal tD(N ⁇ 1)A arrives at data processing module D(N ⁇ 1).
- the forward synchronization signal tDNA arrives at data processing module DN.
- the last data processing module DN receives the forward synchronization signal and responds by sending a return synchronization signal tDNB back up the drillstring.
- the return synchronization signal tD(N ⁇ 1)B arrives at data processing module D(N ⁇ 1).
- the return synchronization signal tD 2 B arrives at data processing module D 2 .
- the return synchronization signal tD 1 B arrives at data processing module D 1 .
- the return synchronization signal tSB arrives at the remote computer 500 .
- Each data processing module along the drillstring may begin collecting accelerometer data when it receives its forward synchronization signal tXA and for a predetermined time period thereafter.
- a synchronization time tSYNCH may be determined by the remote computer 500 based on the forward synchronization signal tSA and the return synchronization signal tSB. This determination may be as simple as one-half the difference between the forward synchronization signal tSA and the return synchronization signal tSB. However, in some cases, latency for signals in the forward direction may be different from latency for signals in the return direction. This difference may be taken into account in the determination of the synchronization time tSYNCH.
- Each of the data processing modules 300 may determine the synchronization time tSYNCH in a similar manner based on its forward synchronization signal tXA and its return synchronization signal tXB. With the synchronization time tSYNCH determined, the data processing module 300 may delete the accelerometer data collected between its forward synchronization signal tXA and the synchronization time tSYNCH. Thus, the accelerometer data at each data processing module 300 begins at the same time. With this fixed starting point at each of the data processing modules 200 , correlated velocity and displacement determinations may be made by each data processing module 300 . The information for acceleration, velocity, and displacement may be transferred from each data processing module 300 to the remote computer 500 for further processing, such as, for example, harmonic vibration analysis.
- each data processing module 300 may send its acceleration information to the remote computer 500 from its forward synchronization signal tXA time, along with the time difference between the forward synchronization signal tXA and the return synchronization signal tXB.
- the remote computer 500 can then strip off accelerometer information for each data processing module 300 between the forward synchronization signal tXA and the synchronization time tSYNCH.
- the remote computer 500 can then determine correlated velocity and displacement information for each data processing module 300 and perform harmonic vibration analysis on the drillstring.
- This synchronization time tSYNCH process has been described relative to a remote computer 500 on the surface generating the initial forward synchronization signal tSA and receiving the final return synchronization signal tSB.
- the forward synchronization signal tXA may be initiated by one of the data processing modules 300 .
- the forward direction may be defined as from the drill bit toward the surface, rather than from the surface toward the drill bit.
- the drill bit may initiate the forward synchronization signal tXA and the remote computer 500 may generate the return synchronization signal tXB.
- a model may be developed of the drill string relative to characteristics of the various drillstring components.
- characteristics that may be modeled are length of the components, material, torsional stiffness, axial stiffness and lateral stiffness.
- a synchronization signal may be propagated along the drill string using methods other than an electronic signal.
- the synchronization signal may be a mud pulse that is detectable by each of the electronics modules 290 .
- the synchronization signal may be an acceleration event that is propagated along the drillstring. Non-limiting examples of such acceleration events are a sonic pulse that is directed along the drillstring or a drilling event (e.g., the drill bit hitting the bottom of the hole) that will propagate along the drillstring.
- propagation times of these synchronization signals may be determined quite accurately such that each electronics module 290 may be able to determine a synchronization time in response to an arrival time of the synchronization pulse and an analysis of the drillstring model.
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Abstract
Description
- The present invention relates generally to transmission of data within a wellbore and more particularly to methods and apparatuses for obtaining downhole data or measurements while drilling.
- In rotary drilling, a rock bit is threaded onto a lower end of a drillstring. The drillstring is lowered and rotated, causing the bit to disintegrate geological formations. The bit cuts a borehole somewhat larger than the drillstring, so an annulus is created between the walls of the borehole and the drill string. Section after section of drill pipe, or other drillstring tool, is added to the drillstring as new depths are reached.
- During drilling, a fluid, often called “mud,” is pumped downward through the drill pipe, through the drill bit, and up to the surface through the annulus, carrying cuttings from the borehole bottom to the surface.
- It is often useful to detect borehole conditions, drill bit conditions, and drillstring conditions while drilling. However, much of the desired data is not easily collected or retrieved. An ideal method of data retrieval would not slow down or otherwise hinder ordinary drilling operations, or require excessive personnel or the special involvement of the drilling crew. In addition, data retrieved in near real time is generally of greater utility than data retrieved after a prolonged time delay.
- Directional drilling is the process of using the drill bit to drill a borehole in a specific direction to achieve some drilling objective. Measurements concerning the drift angle, the azimuth, and tool face orientation all aid in directional drilling. A measurement while drilling system may replace single shot surveys and wire line steering tools, saving time and cutting drilling costs.
- Measurement while drilling systems may also yield valuable information about the condition of the drill bit, helping determine when to replace a worn bit, thus avoiding the pulling of bits that are not near their end of life or drilling until a bit fails.
- Other valuable information may be gathered by formation evaluation within a measurement while drilling system. Gamma ray logs, formation resistivity logs, and formation pressure measurements are helpful in determining the necessity of liners, reducing the risk of blowouts, allowing the safe use of lower mud weights for more rapid drilling, reducing the risks of lost circulation, and reducing the risks of differential sticking.
- Existing measurement while drilling systems are said to improve drilling efficiency. However, problems still remain with the transmission of subsurface data from subsurface sensors to surface monitoring equipment, while drilling operations continue. A variety of data transmission systems have been proposed or attempted, but the search for new and improved systems for data transmission continues. Such attempts and proposals include the transmission of signals through cables in the drill string, or through cables suspended in the bore hole of the drill string; the transmission of signals by electromagnetic waves through the earth; the transmission of signals by acoustic or seismic waves through the drill pipe, the earth, or the mud stream; the transmission of signals by way of releasing chemical or radioactive tracers in the mud stream; the storing of signals in a downhole recorder, with periodic or continuous retrieval; and the transmission of data signals over pressure pulses in the mud stream.
- Drilling fluid telemetry in the form of continuous wave and mud pulse telemetry presents a number of challenges. As examples, mud telemetry has a slow data transmission rate, high signal attenuation, difficulty in detecting signals over mud pump noise, maintenance requirements, and the inconvenience of interfacing and matching the data telemetry system with the choice of mud pump, and drill bit.
- Electrical telemetry using electrical conductors in the transmission of subsurface data also presents an array of unique problems. One significant difficulty is making a reliable electrical connection at each pipe junction. Communication systems using direct electrical connection between drill pipes have been proposed. In addition, communication systems using inductive coupling and Hall Effect coupling at drill pipe joints have been proposed.
- With the ever-increasing need for downhole drilling system dynamic data, a number of “subs” (i.e., a sub-assembly incorporated into the drill string above the drill bit and used to collect data relating to drilling and drillstring parameters) have been designed and installed in drillstrings. For data transmission systems to operate to full advantage, it is desirable that drill string components, such as drill bits and sensor subassemblies, be produced to cooperate therewith. Drillstring components so configured could provide significant amounts of useful data. Unfortunately, such conventional subs are expensive and are configured as dedicated downhole components that must be placed in the drillstring instead of, or in addition to, a simple drill pipe or drill collar.
- There is a need for new methods and apparatuses for distributing data processing modules along a drillstring and providing communication between these data processing modules and a remote computer. In addition, there is a need for methods and apparatuses for analyzing dynamic movements of the drillstring.
- Embodiments of the present invention include methods and apparatuses for disposing data processing modules in drillstring elements and providing communication between these data processing modules disposed along a drillstring and a remote computer. In addition, embodiments of the present invention include methods and apparatuses for analyzing dynamic movements of the drillstring.
- One embodiment of the invention includes a component configured for attachment as part of a drillstring. The component includes a tubular member with a central bore formed therethrough. At a first end of the tubular member is a box-end. At a second end of the tubular member is a pin-end adapted for coupling to a box-end of another downhole tool. The box-end includes a first signal transceiver and the pin-end and includes a second signal transceiver operably coupled to the first signal transceiver and also configured for communication with the first signal transceiver in another component of the drillstring. An end-cap is configured for disposition in the central bore of the pin-end to form an annular chamber between a side of the end-cap and a wall of the central bore of the pin-end when the end-cap is disposed in the central bore of the pin-end. In some embodiments, an electronics module is configured for disposition in the annular chamber and configured to communicate with the second signal transceiver.
- Another embodiment of the invention includes a drillstring communication network comprising a plurality of components including downhole tools, subs, joints, drill collars, and other components coupled together. Each component includes a box-end at a first end of the component bearing a first signal transceiver and a pin-end at a second end of the component bearing a second signal transceiver. Some, or all, of the components include an end-cap disposed in a central bore of the pin-end forming an annular chamber between a side of the end-cap and a wall of the central bore of the pin-end. In addition, some, or all, of the components include an electronics module disposed in the annular chamber. The electronics module includes at least one sensor and a communication element operably coupled between the at least one sensor and the second signal transceiver. A remote computer is configured for communicating with the components that include an electronics module. The first signal transceiver of each component and the second signal transceiver of each component are configured for communication therebetween such that the components form a communication link between the communication elements of the components including electronics modules and the remote computer.
- Another embodiment of the invention includes a drillstring dynamics analysis network. The network includes a plurality of data processing modules disposed in a plurality of components coupled to form a drillstring. The plurality of data processing modules are operably coupled for communication therebetween and communication with a remote computer. Each data processing module includes a plurality of accelerometers configured for sensing acceleration in a plurality of directions at the data processing module and a communication element operably coupled to the plurality of accelerometers. The communication element is also coupled to at least one other data processing module. Each data processing module is configured to collect accelerometer information at substantially the same time as other data processing modules and transmit the accelerometer information to the at least one communication element in another data processing module, the remote computer, or a combination thereof.
- Yet another embodiment of the invention includes a method of communicating information in a drillstring. The method includes communicatively coupling a plurality of components bearing a first transceiver at a box-end and a second transceiver at a pin-end by mechanically coupling the plurality of components to form a drillstring communication network. The method also includes disposing at least one electronics module in an annular chamber of the pin-end of at least one component of the plurality to operably couple the at least one electronics module to the drillstring communication network. At least one physical parameter is sensed near the at least one electronics module and communicated to another electronics module in another component, a remote computer, or a combination thereof.
- Yet another embodiment of the invention includes a method of determining dynamics characteristics of a drillstring. The method includes acquiring accelerometer information at a plurality of locations along a drillstring by sampling a plurality of accelerometers disposed in a pin-end of a plurality of drillstring tools operably coupled together to form the drillstring. The method also includes communicating the accelerometer information along the drillstring using communication capabilities of each drillstring tool in the drillstring and processing the accelerometer information from the plurality of locations to determine drillstring dynamics information about the drillstring.
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FIG. 1 illustrates a conventional drilling rig for performing drilling operations; -
FIG. 2 illustrates a drill pipe as an example of a component including one or more embodiments of the present invention; -
FIG. 3 is a perspective view showing a pin-end of one component, a box-end of another component, and an end-cap for disposition in the pin-end; -
FIG. 4 is a perspective view of a pin-end, receiving an embodiment of an electronics module and an end-cap; -
FIG. 5 is a cross sectional view of the pin-end with the end-cap disposed therein; -
FIG. 6 is another cross sectional view of the pin-end with the end-cap disposed therein and illustrating an annular chamber formed by the end-cap and borehole through the pin-end; -
FIG. 7 is a drawing of an embodiment of an electronics module configured as a flex-circuit board enabling formation into an annular ring suitable for disposition in the annular chamber ofFIGS. 5 and 6 ; -
FIG. 8 is a block diagram of an embodiment of a data processing module according to one or more embodiments of the present invention; -
FIG. 9 illustrates placement of multiple accelerometers in a component relative to a borehole; -
FIG. 10 illustrates examples of data sampled from accelerometer sensors and magnetometer sensors along three axes of a Cartesian coordinate system that is static with respect to the drill bit, but rotating with respect to a stationary observer; -
FIG. 11 is a block diagram of a drillstring communication network according to one or more embodiments of the present invention; -
FIG. 12 is a simplified view of a drillstring including embodiments of the present invention and illustrating potential dynamic movement of the drillstring; and -
FIG. 13 illustrates a timeline indicating a synchronizing signal at various locations along the drillstring. -
FIG. 1 depicts an example of a conventional apparatus for performing subterranean drilling operations. Drilling rig 110 includes a derrick 112, a derrick floor 114, a draw works 116, ahook 118, a swivel 120, a Kelly joint 122, and a rotary table 124. Adrillstring 140, which includes a drill pipe section 142 and a drill collar section 144, extends downward from the drilling rig 110 into aborehole 100. The drill pipe section 142 may include a number of tubular drill pipe members or strands connected together and the drill collar section 144 may likewise include a plurality of drill collars. In addition, thedrillstring 140 may include a measurement-while-drilling (MWD) logging subassembly and cooperating mud pulse telemetry data transmission subassembly, which are collectively referred to as anMWD communication system 146, as well as other communication systems known to those of ordinary skill in the art. - During drilling operations, drilling fluid is circulated from a
mud pit 160 through amud pump 162, through a desurger 164, and through a mud supply line 166 into the swivel 120. The drilling mud (also referred to as drilling fluid) flows through the Kelly joint 122 and into an axial central bore in thedrillstring 140. Eventually, it exits through apertures or nozzles, which are located in a drill bit 200, which is connected to the lowermost portion of thedrillstring 140 below drill collar section 144. The drilling mud flows back up through an annular space between the outer surface of thedrillstring 140 and the inner surface of theborehole 100, to be circulated to the surface where it is returned to themud pit 160 through a mud return line 168. - A shaker screen (not shown) may be used to separate formation cuttings from the drilling mud before it returns to the
mud pit 160. TheMWD communication system 146 may utilize a mud pulse telemetry technique to communicate data from a downhole location to the surface while drilling operations take place. To receive data at the surface, a mud pulse transducer 170 is provided in communication with the mud supply line 166. This mud pulse transducer 170 generates electrical signals in response to pressure variations of the drilling mud in the mud supply line 166. These electrical signals are transmitted by asurface conductor 172 to a surface electronic processing system 180, which is conventionally a data processing system with a central processing unit for executing program instructions, and for responding to user commands entered through either a keyboard or a graphical pointing device. The mud pulse telemetry system is provided for communicating data to the surface concerning numerous downhole conditions sensed by well logging and measurement systems that are conventionally located within theMWD communication system 146. Mud pulses that define the data propagated to the surface are produced by equipment conventionally located within theMWD communication system 146. Such equipment typically comprises a pressure pulse generator operating under control of electronics contained in an instrument housing to allow drilling mud to vent through an orifice extending through the drill collar wall. Each time the pressure pulse generator causes such venting, a negative pressure pulse is transmitted to be received by the mud pulse transducer 170. An alternative conventional arrangement generates and transmits positive pressure pulses. As is conventional, the circulating drilling mud also may provide a source of energy for a turbine-driven generator subassembly (not shown) which may be located near a bottom hole assembly (BHA). The turbine-driven generator may generate electrical power for the pressure pulse generator and for various circuits including those circuits that form the operational components of the measurement-while-drilling tools. As an alternative or supplemental source of electrical power, batteries may be provided, particularly as a back up for the turbine-driven generator. - Embodiments of the present invention include methods and apparatuses for disposing data processing modules in drillstring elements and providing communication between these data processing modules disposed along a drillstring and a remote computer. In addition, embodiments of the present invention include methods and apparatuses for analyzing dynamic movements of the drillstring.
- As used in this specification, the term “downhole” is intended to have a relatively broad meaning. Downhole includes environments within a wellbore and below the surface, such as, environments encountered when drilling for oil and/or gas, and extraction of other subterranean minerals, as well as when drilling for water and other subsurface liquids, and for geothermal exploration.
- The term “component” refers to any pipe, collar, joint, sub or other component having a central bore and used in exploration and/or excavation of a subterranean well. Non-limiting examples of such components include casings, drill pipe, drill collars, drill bit subs, transmission links, reamers, stabilizers, motors, turbines, mud hammers, jars, Kellys, blow-out preventers, and steering subs.
-
FIG. 2 is a perspective view of adrill pipe 190 as an example of acomponent 190 including one or more embodiments of the present invention. Thecomponent 190 may include a substantially cylindricaltubular member 220 between a box-end 230 (also referred to herein as a first end 230) and a pin-end 210 (also referred to herein as a second end 210). In general,such components 190 have a central passageway 280 (i.e., a central bore 280) to permit the flow of drilling fluid from the surface to the drill bit. Although thecomponent 190 is illustrated as a section of drill pipe, its purpose is to generally represent the relevant characteristics of allcomponents 190. As a non-limiting example, heavy weight drill pipe and drill collars may differ from the drill pipe ofFIG. 2 in the thickness of the outer wall. Similarly, a reamer, used to enlarge the gage of the borehole above a bit of smaller diameter, and a stabilizer, used to ride against the bore wall to give stability to the drill string, may be similar to the drill pipe ofFIG. 2 with fixed or moveable bearing and cutting surfaces protruding from the outer wall surface of the body. Furthermore, somecomponents 190, like jars, motors, hammers, steering subs, sensor subs, and blow-out preventers, may include additional internal elements in the basic component structure ofFIG. 2 to achieve unique functions related to borehole exploration and/or excavation. - Certain shared functional characteristics are used in order to enable
components 190 to join together in series to form a drill string. By way of example and not limitation, the pin-end 210 includes external tapered threads. Conversely, the box-end 230 includes internal tapered threads. Thetubular member 220 extends between the box-end 230 and the pin-end 210 and may extend between about thirty and ninety feet in length. The pin-end 210 and the box-end 230 are complementary, such that a pin-end 210 of a first component may be joined to box-end 230 a second component. In this manner,components 190 may be joined together to form adrill string 140 as long as 20,000 feet or more. -
FIG. 3 is a perspective views showing a box-end 230 of a first downhole tool, a pin-end 210 of a second downhole tool, and an end-cap 270 for disposition in the pin-end 210. In some embodiments, an electronics module (not illustrated inFIG. 3 ) may be disposed around the end-cap 270 such that the end-cap 270 and electronics module can be secured within the borehole of the pin-end 210. When two components (190A and 190B) are connected the pin-end 210 on the second component is threaded into the box-end 230 on the first component such that surfaces 232 and 234 engage to form a tight connection between the first component and the second component. - A
first signal transceiver 250 is illustrated as embedded in a ring around aninterior surface 236 of the box-end 230 of thefirst component 190A. Similarly, asecond signal transceiver 255 is embedded in a ring around theouter surface 238 of the pin-end 210 of thesecond component 190B. When the two components (190A and 190B) are coupled together, thefirst signal transceiver 250 and thesecond signal transceiver 255 are disposed opposite each other and substantially close together. - Communication between the
first signal transceiver 250 and thesecond signal transceiver 255 may be implemented in a variety of ways. InFIG. 3 , as a non-limiting example, thefirst signal transceiver 250 and thesecond signal transceiver 255 include wire coils embedded in annular channels in theinterior surface 236 andouter surface 238, respectively. Thus, thefirst signal transceiver 250 and thesecond signal transceiver 255 form an intra-tool coupling signal via inductive coupling therebetween. - As another non-limiting example, signals may be transmitted between the
first signal transceiver 250 and thesecond signal transceiver 255 by way of Hall Effect coupling as depicted, described, and claimed in U.S. Pat. No. 4,884,071 entitled “Wellbore Tool With Hall Effect Coupling,” which issued on Nov. 28, 1989 to Howard, the disclosure of which is incorporated herein by reference. - An electrical pathway (240A and 240B) is illustrated as a small borehole in the sidewall of the components (190A and 190B) extends between the box-
end 230 and the pin-end 210. However, other electrical pathways are possible. As a non-limiting example, the electrical pathway may be configured as a conduit running along the inside surface of thecentral bore 280 between the box-end 230 and the pin-end 210. - The
first signal transceiver 250 and thesecond signal transceiver 255 within the same component may be coupled for communication as an inter-tool coupling signal inside the electrical pathway 240 in a number of ways. As non-limiting examples, a coaxial cable, twisted pair wires, individual wires, or combinations thereof may be used to couple thefirst signal transceiver 250 and thesecond signal transceiver 255 for communication. In addition to signals, the wires or cables may be used for transmitting power to electronics modules along the drillstring. Alternatively, some or all of the electronics modules may include their own independent power source. - With the
first signal transceiver 250 andsecond signal transceiver 255 coupled together in each drillstring tool, and the drillstring tools coupled through inductive coupling, Hall effect coupling, or other suitable communicative coupling, the drillstring tools are all coupled together to form a drillstring communication network. - Each drillstring tool need not include an end-
cap 270 or an electronics module (not shown) disposed around the end-cap 270. However, to form a continuous drillstring communication network, each drillstring tool between the surface and the farthest component with a communication element will include afirst signal transceiver 250 coupled to asecond signal transceiver 255 such that the drillstring forms the continuous network. The communication network may extend partially down the drillstring or may extend all the way to, and including, the drill bit. - A
connection pathway 245 extends from the electrical pathway 240 to thecentral bore 280. Thisconnection pathway 245 enables coupling of the electronics module (not shown inFIG. 3 ) disposed around the end-cap 270 to connect with the wires or cables in the electrical pathway 240, thus forming a connection to the drillstring communication network. As a non-limiting example, theconnection pathway 245 may include electrical connections 247 (or other suitable communication link) around thecentral bore 280. In this way, the electronics module may include contact points (not shown) that connect with theelectrical connections 247 when the electronics module is disposed in thecentral bore 280. Of course, the number of communication link signals may vary for different embodiments of the invention. -
FIG. 4 is a perspective view of a pin-end 210, receiving an embodiment of an electronics module and an end-cap 270 according to one or more embodiments of the present invention.FIG. 5 is a cross sectional view of the pin-end 210 with the end-cap 270 disposed therein.FIG. 6 is a cross sectional view of another embodiment of a pin-end 210 with an end-cap 270 disposed therein, and anannular chamber 260 formed between the pin-end 210 and the end-cap 270. For clarity, the threads on the pin-end 210 are not illustrated inFIGS. 4 , 5, and 6. - In the
FIG. 6 embodiment, much of theannular chamber 260 is formed within the sidewall of the pin-end 210. In contrast, in the embodiment ofFIGS. 4 and 5 much of theannular chamber 260 is formed by around the pin-end 210. In more detail,FIGS. 4 and 5 illustrate the pin-end 210 of a component, an end-cap 270, and an embodiment of an electronics module 290 (not shown inFIG. 5 ). The pin-end 210 includes acentral bore 280 formed through the longitudinal axis of the pin-end 210. Inconventional components 190, thiscentral bore 280 is configured for allowing drilling mud to flow therethrough. In the present invention, at least a portion of thecentral bore 280 is given a diameter sufficient for accepting theelectronics module 290 configured in a substantially annular ring, yet without substantially affecting the structural integrity of the pin-end 210. Thus, theelectronics module 290 may be placed down in thecentral bore 280, about the end-cap 270, which extends through the inside diameter of the annular ring of theelectronics module 290 to create a fluid tight annular chamber 260 (FIG. 5 ) with the wall of thecentral bore 280 and seal theelectronics module 290 in place within the pin-end 210. - The end-
cap 270 includes acap bore 276 formed therethrough, such that the drilling mud may flow through the end cap, through thecentral bore 280 of the pin-end 210 to the other side of the pin-end 210, and then into the body ofcomponent 190. In addition, the end-cap 270 includes a first flange 271 including afirst sealing ring 272, near the lower end of the end-cap 270, and asecond flange 273 including a second sealing ring 274, near the upper end of the end-cap 270. -
FIG. 5 is a cross-sectional view of the end-cap 270 disposed in the pin-end 210 without the electronics module 290 (FIG. 7 ), illustrating theannular chamber 260 formed between the first flange 271, thesecond flange 273, the end-cap body 275, and the walls of thecentral bore 280. Thefirst sealing ring 272 and the second sealing ring 274 form a protective, fluid tight, seal between the end-cap 270 and the wall of thecentral bore 280 to protect the electronics module 290 (FIG. 7 ) from adverse environmental conditions. The protective seal formed by thefirst sealing ring 272 and the second sealing ring 274 may also be configured to maintain theannular chamber 260 at approximately atmospheric pressure. - In the embodiment shown in
FIGS. 4 and 5 , thefirst sealing ring 272 and the second sealing ring 274 are formed of material suitable for high-pressure, high temperature environment, such as, for example, a Hydrogenated Nitrile Butadiene Rubber (HNBR) O-ring in combination with a PEEK back-up ring. In addition, the end-cap 270 may be secured to the pin-end 210 with a number of connection mechanisms such as, for example, a secure press-fit using sealing rings 272 and 274, a threaded connection, an epoxy connection, a shape-memory retainer, welded, and brazed. It will be recognized by those of ordinary skill in the art that the end-cap 270 may be held in place quite firmly by a relatively simple connection mechanism due to differential pressure and downward mudflow during drilling operations. -
FIG. 7 is a drawing of an embodiment of theelectronics module 290 configured as a flex-circuit board enabling formation into an annular ring suitable for disposition in theannular chamber 260 ofFIGS. 4 , 5, and 6. This flex-circuit board embodiment of theelectronics module 290 is shown in a flat uncurled configuration inFIG. 7 . The flex-circuit board 292 includes a high-strength reinforced backbone (not shown) to provide acceptable transmissibility of acceleration effects to sensors such as accelerometers. In addition, other areas of the flex-circuit board 292 bearing non-sensor electronic components may be attached to the end-cap 270 in a manner suitable for at least partially attenuating the acceleration effects experienced by thecomponent 190 during drilling operations using a material such as a visco-elastic adhesive. - As used herein,
electronics module 290 generally refers to a physical configuration of a circuit board including electrical components, electronic components, or combinations thereof configured for practicing embodiments of the present invention. Furthermore, as used herein, data processing module generally refers to a functional configuration of elements on theelectronics module 290 configured to perform functions according to embodiments of the present invention. - A data processing module may be configured for sampling data in different sampling modes, sampling data at different sampling frequencies, and analyzing data. The data processing module may also be configured to communicate the sampled data, the analyzed data, software, firmware, control data, and combinations thereof to other data processing modules in
other components 190, the drill bit, or a surface computer (not shown). - An embodiment of a
data processing module 300 is illustrated inFIG. 8 . Thedata processing module 300 includes apower supply 310, one ormore processors 320, amemory 330, and aclock 360. Thedata processing module 300 may also include one ormore sensors 340 configured for measuring a plurality of physical parameter related to a component state, which may include component condition, drilling operation conditions, and environmental conditions proximate the component. In the embodiment ofFIG. 8 , thesensors 340 may include a plurality ofaccelerometers 340A, a plurality ofmagnetometers 340M, and at least onetemperature sensor 340T. - The plurality of
accelerometers 340A may include threeaccelerometers 340A configured in a Cartesian coordinate arrangement. Similarly, the plurality ofmagnetometers 340M may include threemagnetometers 340M configured in a Cartesian coordinate arrangement. While any coordinate system may be defined within the scope of the present invention, one example of a Cartesian coordinate system, shown inFIG. 4 , defines a z-axis along the longitudinal axis about which the drill bit 200 rotates, an x-axis perpendicular to the z-axis, and a y-axis perpendicular to both the z-axis and the x-axis, to form the three orthogonal axes of a typical Cartesian coordinate system. Because thedata processing module 300 may be used while thecomponent 190 is rotating and with thecomponent 190 in other than vertical orientations, the coordinate system may be considered a rotating Cartesian coordinate system with a varying orientation relative to the fixed surface location of the drilling rig 110 (FIG. 1 ). - The
accelerometers 340A of theFIG. 8 embodiment, when enabled and sampled, provide a measure of acceleration of thecomponent 190 along at least one of the three orthogonal axes. Thedata processing module 300 may includeadditional accelerometers 340A to provide a redundant system, whereinvarious accelerometers 340A may be selected, or deselected, in response to fault diagnostics performed by theprocessor 320. Furthermore,additional accelerometers 340A may be used to determine additional information about bit dynamics and assist in distinguishing lateral accelerations from angular accelerations. -
FIG. 9 is a top view of a component within a borehole. As can be seen,FIG. 9 illustrates thecomponent 190 offset within theborehole 100, which may occur due to drillstring behavior other than simple rotation around a rotational axis.FIG. 9 also illustrates placement of multiple accelerometers with a first set ofaccelerometers 340A positioned at a first location and a second set ofaccelerometers 340A′ positioned at a second location within the bit body. By way of example, thefirst set 340A includes a first coordinatesystem 341 with x, y, and z accelerometers, while thesecond set 340A′ includes a second coordinate system with x andy accelerometers 341′. For example only, an x accelerometer may be configured to detect and measure a tangential acceleration of drill bit 200, a y accelerometer may be configured to detect and measure a radial acceleration of drill bit 200, and a z accelerometer may be configured to detect and measure an axial acceleration of drill bit 200. As a non-limiting example,first set 340A andsecond set 340A′ may comprise accelerometers rated for 30 g acceleration. Furthermore, first set ofaccelerometers 340A and second set ofaccelerometers 340A′ may each include anadditional x accelerometer 351 located with the first set ofaccelerometers 340A and anadditional x accelerometer 351′ located with the second set ofaccelerometers 340A′. These additional x accelerometers (351 and 351′) may be configured to detect and measure lower accelerations in a radial direction relative to the x accelerometers in the first set ofaccelerometers 340A and the second set ofaccelerometers 340A′. As a non-limiting example only, the additional x accelerometer (351 and 351′) may comprise accelerometers rated for 5 g accelerations and x accelerometers in thefirst set 340A and the second 340A′ may comprise accelerometers rated for 30 g accelerations. As such, the second x accelerometers may provide enhanced granularity and, thus, enhanced precision in revolutions per minute (RPM) calculations. - For example, in high motion situations, the
first set 340A and the second 340A′ of accelerometers provide a large range of accelerations (i.e., up to 30 g). In lower motion situations, xaccelerometers - Of course, other embodiments may include three coordinates in the second set of accelerometers as well as other configurations and orientations of accelerometers alone or in multiple coordinate sets. With the placement of a second set of accelerometers at a different location on the drill bit, differences between the accelerometer sets may be used to distinguish lateral accelerations from angular accelerations. For example, if the two sets of accelerometers are both placed at the same radius from the rotational center of the component and the component is only rotating about that rotational center, then the two accelerometer sets will experience the same angular rotation. However, the bit may be experiencing more complex behavior, such as, for example, bit whirl, bit wobble, bit walking, and lateral vibration. These behaviors include some type of lateral motion in combination with the angular motion. For example, as illustrated in
FIG. 9 , the component may be rotating about its rotational axis and at the same time, walking around the larger circumference of theborehole 100. In these types of motion, the two sets of accelerometers disposed at different places will experience different accelerations. With the appropriate signal processing and mathematical analysis, the lateral accelerations and angular accelerations may be more easily determined with the additional accelerometers. - Furthermore, if initial conditions are known or estimated, component velocity profiles and component trajectories may be inferred by mathematical integration of the accelerometer data using conventional numerical analysis techniques. As is explained more fully below, acceleration data may be analyzed and used to determine adaptive thresholds to trigger specific events within the
data processing module 300. Furthermore, if the acceleration data is integrated to obtain bit velocity profiles or bit trajectories, these additional data sets may be useful for determining additional adaptive thresholds through direct application of the data set or through additional processing, such as, for example, pattern recognition analysis. By way of example, and not limitation, an adaptive threshold may be set based on how far off center a component may traverse before triggering an event of interest within thedata processing module 300. For example, if the component trajectory indicates that the component is offset from the center of the borehole by more than one inch, a different algorithm of data collection from thesensors 340 may be invoked. - The
magnetometers 340M of theFIG. 8 embodiment, when enabled and sampled, provide a measure of the orientation of the component 200 along at least one of the three orthogonal axes relative to the earth's magnetic field. Thedata processing module 300 may includeadditional magnetometers 340M to provide a redundant system, whereinvarious magnetometers 340M may be selected, or deselected, in response to fault diagnostics performed by theprocessor 320. - The
data processing module 300 may be configured to provide for recalibration ofmagnetometers 340M during operation. Recalibration ofmagnetometers 340M may be necessary to remove magnetic field affects caused by the environment in which themagnetometers 340M reside. For example, measurements taken in a downhole environment may include errors due to a high magnetic field within the downhole formation. Therefore, it may be advantageous to recalibrate themagnetometers 340M prior to taking new measurements in order to take into account the high magnetic field within the formation. - The
temperature sensor 340T may be used to gather data relating to the temperature of the component, and the temperature near theaccelerometers 340A,magnetometers 340M, andother sensors 340. Temperature data may be useful for calibrating theaccelerometers 340A andmagnetometers 340M to be more accurate at a variety of temperatures. - Other optional sensors 340 (not shown) may be included as part of the
data processing module 300. Some non-limiting examples ofsensors 340 that may be useful in the present invention are strain sensors at various locations of the component, temperature sensors at various locations of the component, mud (drilling fluid) pressure sensors to measure mud pressure internal to the component, and borehole pressure sensors to measure hydrostatic pressure external to the component.Sensors 340 may also be implemented to detect mud properties, such as, for example,sensors 340 to detect conductivity or impedance to both alternating current and direct current,sensors 340 to detect changes in mud properties, andsensors 340 to characterize mud properties such as synthetic based mud and water based mud. Theseoptional sensors 340 may includesensors 340 that are integrated with and configured as part of thedata processing module 300 or as optionalremote sensors 340 placed in other areas of the component 200. - Returning to
FIG. 8 , thememory 330 may be used for storing sensor data, signal processing results, long-term data storage, and computer instructions for execution by theprocessor 320. Portions of thememory 330 may be located external to theprocessor 320 and portions may be located within theprocessor 320. Thememory 330 may be Dynamic Random Access Memory (DRAM), Static Random Access Memory (SRAM), Read Only Memory (ROM), Nonvolatile Random Access Memory (NVRAM), such as Flash memory, Electrically Erasable Programmable ROM (EEPROM), or combinations thereof. In theFIG. 8 embodiment, thememory 330 is a combination of SRAM in the processor 320 (not shown),Flash memory 330 in theprocessor 320, andexternal Flash memory 330. Flash memory may be desirable for low power operation and ability to retain information when no power is applied to thememory 330. - The
data processing module 300 also includes a communicator 350 (also referred to herein as a communication element 350) for coupling to thesecond signal transceiver 255 viacommunication link 247. As stated earlier, thesecond signal transceiver 255 is coupled to thefirst signal transceiver 250 by aninter-tool coupling signal 252. In addition, communication between thefirst signal transceiver 250 in one component and asecond signal transceiver 255 in another component occurs via intra-tool coupling signals 254. Thecommunicator 350 may use any suitable communications protocol and communication physical layer, which may depend on the type ofinter-tool coupling signal 252 andintra-tool coupling signal 254 used in the component. As non-limiting examples, a wireless communication protocol may include Bluetooth, and 802.11a/b/g protocols. In addition, using thecommunicator 350, thedata processing module 300 may be configured to communicate with a remote processing system (not shown) such as, for example, a computer, a portable computer, or a personal digital assistant (PDA) when the component is not downhole. Thus, thecommunication link 247 may be used for a variety of functions, such as, for example, to download software and software upgrades, to enable setup of thedata processing module 300 by downloading configuration data, and to upload sample data and analysis data. Thecommunicator 350 may also be used to query thedata processing module 300 for information related to the component, such as, for example, data processing module serial number, software version, and other long term data that may be stored in the NVRAM. - The
processor 320 in the embodiment ofFIG. 8 may be configured for processing, analyzing, and storing collected sensor data. For sampling of the analog signals from thevarious sensors 340, theprocessor 320 of this embodiment may include a digital-to-analog converter (DAC). However, those of ordinary skill in the art will recognize that the present invention may be practiced with one or more external DACs in communication between thesensors 340 and theprocessor 320. In addition, theprocessor 320 may include internal SRAM and NVRAM. However, those of ordinary skill in the art will recognize that the present invention may be practiced withmemory 330 that is only external to theprocessor 320 as well as in a configuration using noexternal memory 330 and onlymemory 330 internal to theprocessor 320. - The embodiment of
FIG. 8 may use battery power as theoperational power supply 310. Battery power enables operation without consideration of connection to another power source while in a drilling environment. However, with battery power, power conservation may become a significant consideration in the present invention. As a result, alow power processor 320 andlow power memory 330 may enable longer battery life. Similarly, other power conservation techniques may be significant in the present invention. Alternatively, power may be supplied to thedata processing module 300 through thecommunication link 247. - Software running on the
processor 320 may be used to manage battery life intelligence and adaptive usage of power consuming resources to conserve power. The battery life intelligence can track the remaining battery life (i.e., charge remaining on the battery) and use this tracking to manage other processes within the system. By way of example, the battery life estimate may be determined by sampling a voltage from the battery, sampling a current from the battery, tracking a history of sampled voltage, tracking a history of sampled current, and combinations thereof. - The battery life estimate may be used in a number of ways. For example, near the end of battery life, the software may reduce sampling frequency of
sensors 340, or may be used to cause the power control bus to begin shutting down voltage signals to various components. - This power management can create a graceful, gradual shutdown. For example, perhaps power to the magnetometers is shut down at a certain point of remaining battery life. At another point of battery life, perhaps the accelerometers are shut down. Near the end of battery life, the battery life intelligence can ensure data integrity by making sure improper data is not gathered or stored due to inadequate voltage at the
sensors 340, theprocessor 320, or thememory 330. - Software modules also may be devoted to memory management with respect to data storage. The amount of data stored may be modified with adaptive sampling and data compression techniques. For example, data may be originally stored in an uncompressed form. Later, when memory space becomes limited, the data may be compressed to free up additional memory space. In addition, data may be assigned priorities such that when memory space becomes limited high priority data is preserved and low priority data may be overwritten.
- In some embodiments, the
data processing module 300 may include no more than arepeater 355. Therepeater 355 may get power from thepower supply 310 or from thecommunication link 247. As the communication signal travels within the component via theinter-tool coupling signal 252 and betweencomponents 190 via theintra-tool coupling signal 254, signal attenuation and distortion is likely to occur. Some signal transceivers may have less attenuation than others, but loss and distortion may be a problem, particularly for very long drillstrings. As a result, arepeater 355 can be placed at intervals along the communication signal to amplify and re-condition the signal to be clean and strong for further transmission up the drillstring, down the drillstring, or combination thereof. - In still other embodiments, the
data processing module 300 may not include theprocessor 320 andmemory 330. Instead, thecommunicator 350 may couple directly to thesensors 340 and sample the sensor signals prior to transmission on the communication signal. -
FIG. 10 illustrates examples of data sampled from accelerometer sensors and magnetometer sensors along three axes of a Cartesian coordinate system that is static with respect to the drill bit, but rotating with respect to a stationary observer. InFIG. 10 , magnetometer samples histories are shown forX magnetometer samples 610X andY magnetometer samples 610Y. By tracking the history of these samples, software can detect when a complete revolution has occurred. For example, the software can detect when theX magnetometer samples 610X have become positive (i.e., greater than a selected value) as a starting point of a revolution. The software can then detect when theY magnetometer samples 610Y have become positive (i.e., greater than a selected value) as an indication that revolutions are occurring. Then, the software can detect the next time theX magnetometer samples 610X become positive, indicating a complete revolution. -
FIG. 10 illustrates torsional oscillation as an example of component dynamic behavior that may be of interest. Initially, themagnetometer measurements RPM 611Y, when the drill bit is freed from the binding force. This increase in rotation is also illustrated by theaccelerometer measurements - As stated earlier, time varying data such as that illustrated in
FIG. 10 may be analyzed for detection of specific events. These events may be used within thedata processing module 300 to modify the behavior of thedata processing module 300. By way of example, and not limitation, the events may cause changes such as, modifying power delivery to various elements within thedata processing module 300, modifying communications modes, and modifying data collection scenarios. Data collection scenarios may be modified, for example by modifying whichsensors 340 to activate or deactivate, the sampling frequency for thosesensors 340, compression algorithms for collected data, modifications to the amount of data that is stored inmemory 330 on thedata processing module 300, changes to data deletion protocols, modification to additional triggering event analysis, and other suitable changes. - Trigger event analysis may be as straightforward as a threshold analysis. However, other more detailed analysis may be performed to develop triggers based on component behavior such as component dynamics analysis, formation analysis, and the like.
-
FIG. 11 is a block diagram of adrillstring communication network 400 according to one or more embodiments of the present invention. The communication network includes aremote computer 500, a first downhole module D1, a second downhole module D2, a bit, a last downhole module DN, and a penultimate downhole module D(N−1). Each downhole module represents an embodiment of anelectronics module 290 that may be placed in a pin-end 210 of a component. Of course, there may be many more downhole modules along the communication network. In addition, each component need not include a downhole module. Thus, while not illustrated,many components 190 may simply include thefirst signal transceiver 250 and thesecond signal transceiver 255 for making thedrillstring communication network 400 continuous. Thus each component that participates in the downhole communications network includes afirst signal transceiver 250 coupled to asecond signal transceiver 255 via aninter-tool coupling signal 252. Between each of thecomponents 190 participating in the downhole communications network is anintra-tool coupling signal 254. - Some, or all, of the
components 190 may include anelectronics module 290 coupled to thesecond signal transceiver 255. As explained earlier, theelectronics module 290 may include only arepeater 355. Alternatively, theelectronics module 290 may include a variety of components such asprocessors 320,sensors 340, arepeater 355, and combinations thereof. - The downhole modules may be disposed at regular intervals along the
drillstring communication network 400 or may be concentrated at certain areas of the drillstring that are of particular interest. In addition, thedrillstring communication network 400 need not traverse the entire drillstring. As a non-limiting example, thedrillstring communication network 400 may extend from theremote computer 500 on the surface only down to a stabilizer or motor sub. As another non-limiting example, thedrillstring communication network 400 may extend from the drill bit up to anelectronics module 290 only part way up the drillstring. In this type of network, some of theelectronics modules 290 may include large amounts ofmemory 330 for storing historical information from the drill bit orother electronics modules 290 in the network. -
FIG. 12 is a simplified view of a drillstring including embodiments of the present invention and illustrating potential dynamic movement of the drillstring. The drillstring includes components D1, D2, D3, D4, D(N−3), D(N−2), D(N−1), DN, and a drill bit. In general, the drillstring may experience undesired motion in a lateral direction (DL), an axial direction (DA) and a torsional direction (DT). Mechanical systems that experience displacement due to forces, particularly periodic forces, such as drillstring rotation, may experience vibrations in any of these directions as well as combinations of these directions. In some cases, these vibrations can occur at a natural harmonic of the mechanical system (i.e., the drillstring) and cause large, undesired forces and displacements on elements of the drillstring. In embodiments of the present invention,data processing modules 300 distributed along the drillstring can sample accelerations, and determine velocities and displacements at each of the locations where adata processing module 300 is disposed. When combined and analyzed together with the mechanical characteristics of the drillstring, harmonic vibrations can be detected. In response, if a harmonic vibration is severe, an operator may modify the drilling characteristics by, for example, modifying the weight-on-bit or the rotational speed. - In addition, motion characteristics may be inferred at locations along the drillstring different from where the
electronics modules 290 are located. As a non-limiting example, interpolation of the motion characteristics at twodifferent electronics modules 290 may be used to determine motion characteristics at points along the drillstring between the twoelectronics modules 290. As another non-limiting example, extrapolation of the motion characteristics at twodifferent electronics modules 290 may be used to determine motion characteristics at points along the drillstring that are outside the twoelectronics modules 290. - To analyze the dynamic movement characteristics of the drillstring as a whole, the acceleration measurements, velocity determinations, and displacement determinations at each of the
data processing module 300 locations must be synchronized with respect to each other so that the data at each location can be correlated to the same time. - Time synchronization of the distributed data-acquisition/sensor packages may be accomplished in a pair-wise fashion using an algorithm used for networks, e.g., TPSN (time synchronization for sensor networks) or TDMA (time division multiple access). In the case of TPSN, the objective is to discover a propagation time and a clock drift between two sensors. Propagation time and clock drift may be represented as:
- Propagation=(deltaT1-2+deltaT2-1)/2
- clock drift=(deltaT1-2−deltaT2-1)/2
- Where deltaT1-2 is the total transit time (propagation time+clock drift) from
unit 1 tounit 2 and deltaT2-1 is the total transit time fromunit 2 tounit 1. - In addition, this pair-wise check may be performed periodically during the run to maintain synchronization, which may vary due to clock drift.
- In the communication network described herein, there may be significant latency between when a signal starts at one point of the drillstring and when it reaches the farthest
data processing module 300. This latency may be caused by theintra-tool coupling signal 254 links,repeaters 355, and even theinter-tool coupling signal 252 distances that must be traveled. As a result, merely sending a start time down the communication signal as a synchronization point will not be effective because it may be difficult, or impossible to determine the latency at each point where adata processing module 300 resides. -
FIG. 13 illustrates a method of determining a synchronization time that is substantially the same at any point along the drillstring. A timeline indicating a synchronizing signal at various locations along the drillstring is shown inFIG. 13 . InFIG. 13 , a time line is illustrated for the surface S with theremote computer 500, a data processing module D1 at a first location on the drillstring, a data processing module D2 at a second location on the drillstring, a data processing module D(N−1) at a penultimate location on the drillstring, and a data processing module DN at a last location on the drillstring. To begin a synchronization process, theremote computer 500 sends a forward synchronization signal tSA down the communication signal. At a time delay later, the forward synchronization signal tD1A arrives at data processing module D1. At a time delay later, the forward synchronization signal tD2A arrives at data processing module D2. At a time delay later, the forward synchronization signal tD(N−1)A arrives at data processing module D(N−1). At a time delay later, the forward synchronization signal tDNA arrives at data processing module DN. - The last data processing module DN receives the forward synchronization signal and responds by sending a return synchronization signal tDNB back up the drillstring. At a time delay later, the return synchronization signal tD(N−1)B arrives at data processing module D(N−1). At a time delay later, the return synchronization signal tD2B arrives at data processing module D2. At a time delay later, the return synchronization signal tD1B arrives at data processing module D1. At a time delay later, the return synchronization signal tSB arrives at the
remote computer 500. - Each data processing module along the drillstring may begin collecting accelerometer data when it receives its forward synchronization signal tXA and for a predetermined time period thereafter. A synchronization time tSYNCH may be determined by the
remote computer 500 based on the forward synchronization signal tSA and the return synchronization signal tSB. This determination may be as simple as one-half the difference between the forward synchronization signal tSA and the return synchronization signal tSB. However, in some cases, latency for signals in the forward direction may be different from latency for signals in the return direction. This difference may be taken into account in the determination of the synchronization time tSYNCH. - Each of the
data processing modules 300 may determine the synchronization time tSYNCH in a similar manner based on its forward synchronization signal tXA and its return synchronization signal tXB. With the synchronization time tSYNCH determined, thedata processing module 300 may delete the accelerometer data collected between its forward synchronization signal tXA and the synchronization time tSYNCH. Thus, the accelerometer data at eachdata processing module 300 begins at the same time. With this fixed starting point at each of the data processing modules 200, correlated velocity and displacement determinations may be made by eachdata processing module 300. The information for acceleration, velocity, and displacement may be transferred from eachdata processing module 300 to theremote computer 500 for further processing, such as, for example, harmonic vibration analysis. - In another processing model, each
data processing module 300 may send its acceleration information to theremote computer 500 from its forward synchronization signal tXA time, along with the time difference between the forward synchronization signal tXA and the return synchronization signal tXB. Theremote computer 500 can then strip off accelerometer information for eachdata processing module 300 between the forward synchronization signal tXA and the synchronization time tSYNCH. Theremote computer 500 can then determine correlated velocity and displacement information for eachdata processing module 300 and perform harmonic vibration analysis on the drillstring. - This synchronization time tSYNCH process has been described relative to a
remote computer 500 on the surface generating the initial forward synchronization signal tSA and receiving the final return synchronization signal tSB. However, the forward synchronization signal tXA may be initiated by one of thedata processing modules 300. In addition, the forward direction may be defined as from the drill bit toward the surface, rather than from the surface toward the drill bit. Thus, if the entire drillstring is participating in the communication network, the drill bit may initiate the forward synchronization signal tXA and theremote computer 500 may generate the return synchronization signal tXB. - As another example of a synchronization mechanism, a model may be developed of the drill string relative to characteristics of the various drillstring components. Some non-limiting examples of characteristics that may be modeled are length of the components, material, torsional stiffness, axial stiffness and lateral stiffness.
- In addition, a synchronization signal may be propagated along the drill string using methods other than an electronic signal. As a non-limiting example, the synchronization signal may be a mud pulse that is detectable by each of the
electronics modules 290. As another non-limiting example, the synchronization signal may be an acceleration event that is propagated along the drillstring. Non-limiting examples of such acceleration events are a sonic pulse that is directed along the drillstring or a drilling event (e.g., the drill bit hitting the bottom of the hole) that will propagate along the drillstring. - Using the model of the drillstring, propagation times of these synchronization signals may be determined quite accurately such that each
electronics module 290 may be able to determine a synchronization time in response to an arrival time of the synchronization pulse and an analysis of the drillstring model. - While the present invention has been described herein with respect to certain preferred embodiments, those of ordinary skill in the art will recognize and appreciate that it is not so limited. Rather, many additions, deletions, and modifications to the preferred embodiments may be made without departing from the scope of the invention as hereinafter claimed. In addition, features from one embodiment may be combined with features of another embodiment while still being encompassed within the scope of the invention as contemplated by the inventors.
Claims (30)
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US12/254,548 US8164980B2 (en) | 2008-10-20 | 2008-10-20 | Methods and apparatuses for data collection and communication in drill string components |
PCT/US2009/061233 WO2010048115A2 (en) | 2008-10-20 | 2009-10-20 | Methods and apparatuses for data collection and communication in drillstring components |
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US12/254,548 US8164980B2 (en) | 2008-10-20 | 2008-10-20 | Methods and apparatuses for data collection and communication in drill string components |
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US20100212961A1 (en) * | 2009-02-24 | 2010-08-26 | Baker Hughes Incorporated | Methods and apparatuses for estimating drill bit condition |
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US20110278018A1 (en) * | 2010-05-12 | 2011-11-17 | General Electric Company | Electrical coupling apparatus and method |
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US20150330210A1 (en) * | 2012-12-27 | 2015-11-19 | Halliburton Energy Services, Inc. | Determining gravity toolface and inclination in a rotating downhole tool |
US20160194952A1 (en) * | 2013-08-13 | 2016-07-07 | Evolution Engineering Inc. | Downhole probe assembly with bluetooth device |
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US20180149017A1 (en) * | 2012-11-02 | 2018-05-31 | Silixa Ltd. | Acoustic illumination for flow-monitoring |
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US10060255B2 (en) | 2012-11-30 | 2018-08-28 | Xact Downhole Telemetry, Inc. | Downhole low rate linear repeater relay network timing system and method |
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US10920562B2 (en) | 2017-11-01 | 2021-02-16 | Schlumberger Technology Corporation | Remote control and monitoring of engine control system |
US10705499B2 (en) | 2018-03-30 | 2020-07-07 | Schlumberger Technology Corporation | System and method for automated shutdown and startup for a network |
GB2596990B (en) | 2019-04-24 | 2022-11-30 | Schlumberger Technology Bv | System and methodology for actuating a downhole device |
Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884071A (en) * | 1987-01-08 | 1989-11-28 | Hughes Tool Company | Wellbore tool with hall effect coupling |
US6208586B1 (en) * | 1991-06-14 | 2001-03-27 | Baker Hughes Incorporated | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas |
US6392317B1 (en) * | 2000-08-22 | 2002-05-21 | David R. Hall | Annular wire harness for use in drill pipe |
US6400646B1 (en) * | 1999-12-09 | 2002-06-04 | Halliburton Energy Services, Inc. | Method for compensating for remote clock offset |
US6405795B2 (en) * | 1995-06-12 | 2002-06-18 | Weatherford/Lamb, Inc. | Subsurface signal transmitting apparatus |
US20020140572A1 (en) * | 2002-02-04 | 2002-10-03 | Gardner Wallace R. | Very high data rate telemetry system for use in a wellbore |
US6641434B2 (en) * | 2001-06-14 | 2003-11-04 | Schlumberger Technology Corporation | Wired pipe joint with current-loop inductive couplers |
US6817425B2 (en) * | 2000-11-07 | 2004-11-16 | Halliburton Energy Serv Inc | Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator |
US20050035876A1 (en) * | 2003-08-13 | 2005-02-17 | Hall David R. | Method for Triggering an Action |
US6866306B2 (en) * | 2001-03-23 | 2005-03-15 | Schlumberger Technology Corporation | Low-loss inductive couplers for use in wired pipe strings |
US20050200498A1 (en) * | 2004-03-04 | 2005-09-15 | Gleitman Daniel D. | Multiple distributed sensors along a drillstring |
US7017662B2 (en) * | 2003-11-18 | 2006-03-28 | Halliburton Energy Services, Inc. | High temperature environment tool system and method |
US20060065440A1 (en) * | 2002-04-19 | 2006-03-30 | Hutchinson Mark W | Method and apparatus for determining drill string movement mode |
US7064676B2 (en) * | 2000-07-19 | 2006-06-20 | Intelliserv, Inc. | Downhole data transmission system |
US20060212224A1 (en) * | 2005-02-19 | 2006-09-21 | Baker Hughes Incorporated | Use of the dynamic downhole measurements as lithology indicators |
US20060221768A1 (en) * | 2004-09-01 | 2006-10-05 | Hall David R | High-speed, Downhole, Cross Well Measurement System |
US20060260797A1 (en) * | 2005-05-21 | 2006-11-23 | Hall David R | Downhole component with multiple transmission elements |
US20060272859A1 (en) * | 2005-06-07 | 2006-12-07 | Pastusek Paul E | Method and apparatus for collecting drill bit performance data |
US7168506B2 (en) * | 2004-04-14 | 2007-01-30 | Reedhycalog, L.P. | On-bit, analog multiplexer for transmission of multi-channel drilling information |
US7173542B2 (en) * | 1999-02-19 | 2007-02-06 | Halliburton Energy Services, Inc. | Data relay for casing mounted sensors, actuators and generators |
US7190280B2 (en) * | 2003-01-31 | 2007-03-13 | Intelliserv, Inc. | Method and apparatus for transmitting and receiving data to and from a downhole tool |
US7198118B2 (en) * | 2004-06-28 | 2007-04-03 | Intelliserv, Inc. | Communication adapter for use with a drilling component |
US7224288B2 (en) * | 2003-07-02 | 2007-05-29 | Intelliserv, Inc. | Link module for a downhole drilling network |
US20070177461A1 (en) * | 2006-01-16 | 2007-08-02 | Marsh Laban M | Filtering and detection of telemetry |
US20070188344A1 (en) * | 2005-09-16 | 2007-08-16 | Schlumberger Technology Center | Wellbore telemetry system and method |
US20080000688A1 (en) * | 2006-07-03 | 2008-01-03 | Mcloughlin Stephen John | Adaptive apparatus, system and method for communicating with a downhole device |
US20080007424A1 (en) * | 2006-02-06 | 2008-01-10 | Hall David R | Apparatus for Interfacing with a Transmission Path |
US7336199B2 (en) * | 2006-04-28 | 2008-02-26 | Halliburton Energy Services, Inc | Inductive coupling system |
US20080053654A1 (en) * | 2006-08-30 | 2008-03-06 | Kalim Ullah | Electro-optic cablehead for oilwell applications |
-
2008
- 2008-10-20 US US12/254,548 patent/US8164980B2/en active Active
-
2009
- 2009-10-20 WO PCT/US2009/061233 patent/WO2010048115A2/en active Application Filing
Patent Citations (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4884071A (en) * | 1987-01-08 | 1989-11-28 | Hughes Tool Company | Wellbore tool with hall effect coupling |
US6208586B1 (en) * | 1991-06-14 | 2001-03-27 | Baker Hughes Incorporated | Method and apparatus for communicating data in a wellbore and for detecting the influx of gas |
US6405795B2 (en) * | 1995-06-12 | 2002-06-18 | Weatherford/Lamb, Inc. | Subsurface signal transmitting apparatus |
US7173542B2 (en) * | 1999-02-19 | 2007-02-06 | Halliburton Energy Services, Inc. | Data relay for casing mounted sensors, actuators and generators |
US6400646B1 (en) * | 1999-12-09 | 2002-06-04 | Halliburton Energy Services, Inc. | Method for compensating for remote clock offset |
US7064676B2 (en) * | 2000-07-19 | 2006-06-20 | Intelliserv, Inc. | Downhole data transmission system |
US6392317B1 (en) * | 2000-08-22 | 2002-05-21 | David R. Hall | Annular wire harness for use in drill pipe |
US6817425B2 (en) * | 2000-11-07 | 2004-11-16 | Halliburton Energy Serv Inc | Mean strain ratio analysis method and system for detecting drill bit failure and signaling surface operator |
US6866306B2 (en) * | 2001-03-23 | 2005-03-15 | Schlumberger Technology Corporation | Low-loss inductive couplers for use in wired pipe strings |
US6641434B2 (en) * | 2001-06-14 | 2003-11-04 | Schlumberger Technology Corporation | Wired pipe joint with current-loop inductive couplers |
US20020140572A1 (en) * | 2002-02-04 | 2002-10-03 | Gardner Wallace R. | Very high data rate telemetry system for use in a wellbore |
US20060065440A1 (en) * | 2002-04-19 | 2006-03-30 | Hutchinson Mark W | Method and apparatus for determining drill string movement mode |
US7190280B2 (en) * | 2003-01-31 | 2007-03-13 | Intelliserv, Inc. | Method and apparatus for transmitting and receiving data to and from a downhole tool |
US7224288B2 (en) * | 2003-07-02 | 2007-05-29 | Intelliserv, Inc. | Link module for a downhole drilling network |
US20050035876A1 (en) * | 2003-08-13 | 2005-02-17 | Hall David R. | Method for Triggering an Action |
US7017662B2 (en) * | 2003-11-18 | 2006-03-28 | Halliburton Energy Services, Inc. | High temperature environment tool system and method |
US20050200498A1 (en) * | 2004-03-04 | 2005-09-15 | Gleitman Daniel D. | Multiple distributed sensors along a drillstring |
US7168506B2 (en) * | 2004-04-14 | 2007-01-30 | Reedhycalog, L.P. | On-bit, analog multiplexer for transmission of multi-channel drilling information |
US7198118B2 (en) * | 2004-06-28 | 2007-04-03 | Intelliserv, Inc. | Communication adapter for use with a drilling component |
US20060221768A1 (en) * | 2004-09-01 | 2006-10-05 | Hall David R | High-speed, Downhole, Cross Well Measurement System |
US20060212224A1 (en) * | 2005-02-19 | 2006-09-21 | Baker Hughes Incorporated | Use of the dynamic downhole measurements as lithology indicators |
US20060260797A1 (en) * | 2005-05-21 | 2006-11-23 | Hall David R | Downhole component with multiple transmission elements |
US20060272859A1 (en) * | 2005-06-07 | 2006-12-07 | Pastusek Paul E | Method and apparatus for collecting drill bit performance data |
US20070188344A1 (en) * | 2005-09-16 | 2007-08-16 | Schlumberger Technology Center | Wellbore telemetry system and method |
US20070177461A1 (en) * | 2006-01-16 | 2007-08-02 | Marsh Laban M | Filtering and detection of telemetry |
US20080007424A1 (en) * | 2006-02-06 | 2008-01-10 | Hall David R | Apparatus for Interfacing with a Transmission Path |
US7336199B2 (en) * | 2006-04-28 | 2008-02-26 | Halliburton Energy Services, Inc | Inductive coupling system |
US20080000688A1 (en) * | 2006-07-03 | 2008-01-03 | Mcloughlin Stephen John | Adaptive apparatus, system and method for communicating with a downhole device |
US20080053654A1 (en) * | 2006-08-30 | 2008-03-06 | Kalim Ullah | Electro-optic cablehead for oilwell applications |
Cited By (62)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8016050B2 (en) * | 2008-11-03 | 2011-09-13 | Baker Hughes Incorporated | Methods and apparatuses for estimating drill bit cutting effectiveness |
US20100108380A1 (en) * | 2008-11-03 | 2010-05-06 | Baker Hughes Incorporated | Methods and apparatuses for estimating drill bit cutting effectiveness |
US20100212961A1 (en) * | 2009-02-24 | 2010-08-26 | Baker Hughes Incorporated | Methods and apparatuses for estimating drill bit condition |
US8028764B2 (en) * | 2009-02-24 | 2011-10-04 | Baker Hughes Incorporated | Methods and apparatuses for estimating drill bit condition |
US20110278018A1 (en) * | 2010-05-12 | 2011-11-17 | General Electric Company | Electrical coupling apparatus and method |
US8198752B2 (en) * | 2010-05-12 | 2012-06-12 | General Electric Company | Electrical coupling apparatus and method |
CN101881140A (en) * | 2010-06-25 | 2010-11-10 | 上海海隆石油钻具有限公司 | High-performance tool joint for transmitting electric power and relevant signals |
US8973679B2 (en) | 2011-02-23 | 2015-03-10 | Smith International, Inc. | Integrated reaming and measurement system and related methods of use |
WO2012116204A3 (en) * | 2011-02-23 | 2012-10-18 | Smith International, Inc. | Integrated reaming and measurement system and related methods of use |
CN102278076A (en) * | 2011-07-11 | 2011-12-14 | 安东石油技术(集团)有限公司 | Limiting pup joint |
WO2013028744A1 (en) * | 2011-08-22 | 2013-02-28 | Baker Hughes Incorporated | Drill bit mounted data acquisition systems and associated data transfer apparatus and method |
US20150117152A1 (en) * | 2012-03-12 | 2015-04-30 | Adam Harold Martin | Method and Apparatus for Acoustic Noise Isolation in a Subterranean Well |
US9494034B2 (en) * | 2012-03-12 | 2016-11-15 | Halliburton Energy Services, Inc. | Method and apparatus for acoustic noise isolation in a subterranean well |
US20180149017A1 (en) * | 2012-11-02 | 2018-05-31 | Silixa Ltd. | Acoustic illumination for flow-monitoring |
AU2019268107B2 (en) * | 2012-11-02 | 2021-07-08 | Chevron U.S.A. Inc. | Acoustic illumination for flow-monitoring |
US11125909B2 (en) * | 2012-11-02 | 2021-09-21 | Silixa Ltd. | Enhanced seismic surveying |
US10927667B2 (en) * | 2012-11-02 | 2021-02-23 | Silixa Ltd. | Acoustic illumination for flow-monitoring |
US20180224572A1 (en) * | 2012-11-02 | 2018-08-09 | Silixa Ltd. | Enhanced seismic surveying |
US10677049B2 (en) | 2012-11-30 | 2020-06-09 | Baker Hughes, A Ge Company, Llc | Downhole low rate linear repeater relay network timing system and method |
US10060255B2 (en) | 2012-11-30 | 2018-08-28 | Xact Downhole Telemetry, Inc. | Downhole low rate linear repeater relay network timing system and method |
EP2929140A4 (en) * | 2012-12-07 | 2016-11-16 | Evolution Engineering Inc | Back up directional and inclination sensors and method of operating same |
WO2014085935A1 (en) | 2012-12-07 | 2014-06-12 | Evolution Engineering Inc. | Back up directional and inclination sensors and method of operating same |
US10066475B2 (en) * | 2012-12-07 | 2018-09-04 | Evolution Engineering Inc. | Back up directional and inclination sensors and method of operating same |
US20170241255A1 (en) * | 2012-12-07 | 2017-08-24 | Evolution Engineering Inc. | Back up directional and inclination sensors and method of operating same |
US9708903B2 (en) | 2012-12-07 | 2017-07-18 | Evolution Engineering Inc. | Back up directional and inclination sensors and method of operating same |
US9810806B2 (en) | 2012-12-21 | 2017-11-07 | Baker Hughes Incorporated | Electronic frame for use with coupled conduit segments |
US10539005B2 (en) * | 2012-12-27 | 2020-01-21 | Halliburton Energy Services, Inc. | Determining gravity toolface and inclination in a rotating downhole tool |
US20150330210A1 (en) * | 2012-12-27 | 2015-11-19 | Halliburton Energy Services, Inc. | Determining gravity toolface and inclination in a rotating downhole tool |
US10673571B2 (en) | 2013-03-15 | 2020-06-02 | Baker Hughes Oilfield Operations Llc | Robust telemetry repeater network system and method |
US10103846B2 (en) | 2013-03-15 | 2018-10-16 | Xact Downhole Telemetry, Inc. | Robust telemetry repeater network system and method |
GB2514457B (en) * | 2013-03-15 | 2015-09-02 | Arrival Oil Tools Inc | Environmental severity measurement tool |
GB2514457A (en) * | 2013-03-15 | 2014-11-26 | Arrival Oil Tools Inc | Environmental severity measurement tool |
US11095399B2 (en) | 2013-03-15 | 2021-08-17 | Baker Hughes Oilfield Operations Llc | Robust telemetry repeater network system and method |
GB2530438B (en) * | 2013-05-08 | 2020-04-08 | Jdi International Leasing Ltd | Coupled electronic and power supply frames for use with borehole conduit connections |
WO2014182486A1 (en) * | 2013-05-08 | 2014-11-13 | Baker Hughes Incorporated | Coupled electronic and power supply frames for use with borehole conduit connections |
US9598951B2 (en) | 2013-05-08 | 2017-03-21 | Baker Hughes Incorporated | Coupled electronic and power supply frames for use with borehole conduit connections |
GB2530438A (en) * | 2013-05-08 | 2016-03-23 | Baker Hughes Inc | Coupled electronic and power supply frames for use with borehole conduit connections |
US9000296B2 (en) | 2013-06-21 | 2015-04-07 | Baker Hughes Incorporated | Electronics frame with shape memory seal elements |
WO2014205066A1 (en) * | 2013-06-21 | 2014-12-24 | Baker Hughes Incorporated | Electronics frame with shape memory seal elements |
US9976414B2 (en) * | 2013-08-13 | 2018-05-22 | Evolution Engineering Inc. | Downhole probe assembly with bluetooth device |
US20160194952A1 (en) * | 2013-08-13 | 2016-07-07 | Evolution Engineering Inc. | Downhole probe assembly with bluetooth device |
US9644433B2 (en) | 2013-08-28 | 2017-05-09 | Baker Hughes Incorporated | Electronic frame having conductive and bypass paths for electrical inputs for use with coupled conduit segments |
GB2519232A (en) * | 2013-10-10 | 2015-04-15 | Weatherford Lamb | Analysis of drillstring dynamics using angular and linear motion data from multiple accelerometer pairs |
US9567844B2 (en) | 2013-10-10 | 2017-02-14 | Weatherford Technology Holdings, Llc | Analysis of drillstring dynamics using angular and linear motion data from multiple accelerometer pairs |
GB2519232B (en) * | 2013-10-10 | 2017-10-04 | Weatherford Tech Holdings Llc | Analysis of drillstring dynamics using angular and linear motion data from multiple accelerometer pairs |
AU2014334888B2 (en) * | 2013-10-15 | 2017-12-14 | Baker Hughes, A Ge Company, Llc | Downhole short wavelength radio telemetry system for intervention applications |
US20150102938A1 (en) * | 2013-10-15 | 2015-04-16 | Baker Hughes Incorporated | Downhole Short Wavelength Radio Telemetry System for Intervention Applications |
EP3114317A4 (en) * | 2014-03-06 | 2017-11-01 | Xact Downhole Telemetry, Inc. | Downhole low rate linear repeater relay network timing system and method |
WO2015134030A1 (en) | 2014-03-06 | 2015-09-11 | Xact Downhole Telemetry, Inc. | Downhole low rate linear repeater relay network timing system and method |
US10550682B2 (en) * | 2015-10-22 | 2020-02-04 | Micropulse, Llc. | Programmable integrated measurement while drilling directional controller |
US20170114630A1 (en) * | 2015-10-22 | 2017-04-27 | MicroPulse, LLC | Integrated measurement while drilling directional controller |
US10738535B2 (en) | 2016-01-22 | 2020-08-11 | Weatherford Technology Holdings, Llc | Power supply for a top drive |
US10979993B2 (en) | 2016-05-25 | 2021-04-13 | Ge Aviation Systems Limited | Aircraft time synchronization system |
US10954753B2 (en) | 2017-02-28 | 2021-03-23 | Weatherford Technology Holdings, Llc | Tool coupler with rotating coupling method for top drive |
US11920411B2 (en) | 2017-03-02 | 2024-03-05 | Weatherford Technology Holdings, Llc | Tool coupler with sliding coupling members for top drive |
US11572762B2 (en) | 2017-05-26 | 2023-02-07 | Weatherford Technology Holdings, Llc | Interchangeable swivel combined multicoupler |
US10544631B2 (en) | 2017-06-19 | 2020-01-28 | Weatherford Technology Holdings, Llc | Combined multi-coupler for top drive |
US10355403B2 (en) | 2017-07-21 | 2019-07-16 | Weatherford Technology Holdings, Llc | Tool coupler for use with a top drive |
US20190106977A1 (en) * | 2017-10-11 | 2019-04-11 | Federico AMEZAGA | Tool coupler with data and signal transfer methods for top drive |
US11441412B2 (en) * | 2017-10-11 | 2022-09-13 | Weatherford Technology Holdings, Llc | Tool coupler with data and signal transfer methods for top drive |
WO2019191195A1 (en) * | 2018-03-27 | 2019-10-03 | Conocophillips Company | Data stream controller with configurable barrier for join and aggregation |
US11203920B2 (en) | 2018-03-27 | 2021-12-21 | Conocophillips Company | Data stream controller with configurable barrier for join and aggregation |
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US8164980B2 (en) | 2012-04-24 |
WO2010048115A2 (en) | 2010-04-29 |
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